Itachi massacred his clan because he felt they were holding him back because they always put the clan first. Itachi killed his clan not they were holding him back and just to test his ability too.
The Uchiha clan was planning to go against Konoha and they were trying to use Itachi as their spy.
What they didn't know was Itachi was loyal to Konoha and was a double agent in other terms; he is siding with Konoha as he said:
"I am sorry Otou-sama but my alligence lies with this village first and the clan second. I will not be a tool for you to use as you see fit. I will not...even if I have to kill every last one of you, I will do it, even at the cost of becoming a missing-nin and being hunted down."
He killed Shisui because he later found out that he was working with Orochimaru; who was also planning to destroy Konoha in which makes him kill Shisui.
Itachi left Sasuke to live because he didn't know anything about the attack. Sasuke was very innocent but Itachi didn't want Sasuke to follow the same path the he went through.
Which made then do the most hardest thing that he has ever done in his entire life. Make Sasuke hate him and here's what happened:
"Itachi...why?" called Sasuke "Why did you kill everyone?"
"Foolish little brother, I killed these fools simply to...test my capacity."
"To test your...You killed everyone to test your capacity" cried Sasuke
"Of course" called Itachi coldly with no regret for what he had done.
"Than why don't you just kill me to?" yelled Sasuke
"Because killing you would be pointless, you are to weak. If you wish to kill me, hate me and get stronger."
Sasuke opened his mouth to shout but was stopped when Itachi disappeared and appeared behind him, knocking him unconcious.
Gently lying him on the ground Itachi stared down at his brothers face for a while, "Know that I would always protect you, little brother and that I had to kill them to keep you safe. When you are grown and have gotten stronger you will come for me, for vengence, I know this and when you do come for me I will gladly give you my life so you'd be known as a hero. I wish you many luck little brother and know that no matter what I have always and will always love you. Good-bye...Sasuke" whispered Itachi as he ran off, diappearing into the forest.
Okay! so that is what really happened. You know Itachi was never really evil at all!
The hokage did tell itachi to kill his entire clan.This is because the Hokage was told that the Uchiha clan was after the position of Hokage and because some of the Uchihas wanted the power of the Nine-Tailed Fox so they could make one of the Uchihas Hokage.
Basically he was scared that the Uchiha Clan would take over. (for power)
Because the Uchiha clan (at that point in time) was going to kill everyone in Konoha as revenge for the Senju clan overtaking Konoha instead of them
HE DOESN'T U KNUCKLEHEAD!!! HE DOES IT OF HIS OWN FREE WILL
The 3rd Hokage and the council of Konoha tells hims to, he just accepted it of his own free will instead of being controlled.
NO HE DID IT TO TEST HIS STRENGTH
Chapter 398-400. Madara tells Sasuke that Itachi was told by the council of Konoha to kill the Uchiha clan because they were planning a coup. The 3rd opposed this but it happened anyway. Itachi told Sasuke that it was all to test his strength, but that was to make him angry and chase him because he wanted to die by Sasuke's hand.
READ THE MANGA
because the sharigan is powerfull so they wanted to elimate the strongest people but seeing itachi has master the sharigan it would of been hard for the hokage to elimate itachi. also why did u think they wanted to kill naruto because of the power.
Because Danzo Sent him on a mission since he said mission compled to huruzen the 3 hokage so he was on a mission
because he wanted his lil brother to kill him and see how far he got
All I know that pain got karma because his itachi kicked his butt
because the uchiha clan was planning to kill the entire village and rule konoha. without sasuke knowing he hated itachi for doing such a crime and confused with terror. they had no choice but to go through with it and have sasuke go through pain and suffering.
That was in the time of the third, but it was not the third, the order came from the assitants and highs rulers of konoha, the third simpatized with the uchiha and itachi encomended sasuke to the third.
The 1rst Hokage and Madara Uchiha didn't get along well. So Madara left his clan. Then in the attack by the 9 tailed fox, all the people blamed the Uchihas, because only Madara could control the demon with mongekou sharringgan. And Itachi was born into one of the ninja wars, so Itachi naturally HATED wars. The Hidden leaf village elders backed Itachi into a corner saying that if Itachi didn't go against his own clan there would be another war, on the other hand... Itachi was also being pressured by and family. The Uchiha clan was planning against the Hidden leaf elders. So Itachi was backed into a deep corner by both the Hidden leaf Elders and his family. He decided that he would take the Hidden leaf elder's word and killed his clan with the help of Madara, but the one thing he couldnt do... was to kill sasuke. He loved Sasuke so much that he couldn't do it... afterwards he went to the 3rd hokage and said for him to protect Saskue. But the 3rd Hokage died and Itachi immediently went to check on Sasuke. But Sasuke, thought that Itachi killed his family for power, and killed Itachi. And then later found out Itachi was just trying to protect him. </3 And so now he's trying to kill the elders, and destroy the Hidden leaf village. Hmm, hope this helps! llD
Itachi left Konoha after he wiping his whole clan off xcpt his little brother "Sasuke". Itachi Killed clan coz, it was an order givn by the 3rd Hokage as he was afraid tht the Uchiha clan will break out a riot & conquer the Hidden Leaf Village. Itachi accepted the Mission undr 1 condition, tht ws "nt to kill his little brother". Itachi lovd his brother sooo much, he wntd him to become stronger thn Itachi. After eliminating the whole clan Itachi lied to sasuke to build hatred in Sasuke so he wud follow it & become strongr. Then Itachi ws givn a new Mission, tht was to "leak out the info about the AKATUKI". so he did it. But the Elders, Hokage & Danzo were the only ones who knew truth about Itachi in the leaf. They Kept it as a secret for the whole time. Itachi Returnd to the leaf aftr the 3rd's death, coz only to remind Danzo & the elders tht he ws alive & they Stil shud keep it as a secret. Itachi fought sasuke almost BLIND during their last battle. Even thn Itachi nvr stoppd lovin his brothr.
Because after Itachi finished killing the entire uchiha clan (except for mardara and sasuke uchiha) he tells him to kill his closest friend like he did and after so he must come to meet with him with the same sharingan he has, mangekyo sharingan. In order for sasuke to possess magekyo sharingan, itachi believed he must kill his closest friend as he did to ShiSui Uchiha and then he will be able to see him.] Sasuke grew up with a hatred for his brother and that hatred made him stronger. I dont want to be a spoiler though so i cant tell you what happens... Sorry lol but i hope this satisfy's you enough.
itachi killed his clan becasue it was an order from the konoha council. (third hokage, and the village elders) they thought the uchiha clan was planning a plot to destory Konoha and with fugaku, itachi and sasuke's father, being the leader of the clan's police force, he used itachi as a double agent, or coup-de-ot.
because the uchiha clan was planning to kill the entire village and rule konoha. without sasuke knowing he hated itachi for doing such a crime and confused with terror. they had no choice but to go through with it and have sasuke go through pain and suffering.
it was order from konoha ,uchiha was planning war with konoha
Deidara, throughout the entire Naruto series after he joins the Akatsuki, has a grudge agenst Uchiha Itachi, and all uchihas, because Itachi is the one who made Deidara join the Akatsuki in the first place. Deidara, while fighting Uchiha Sasuke in Shippuuden, chewed and ate some of his clay turning himself into a human bomb in order to kill Sasuke. He blew himself up but, unfortunately, instead of killing Sasuke, Deidara killed himself.
Itachi Uchiha was killed by his younger brother, Sasuke. Sasuke believed that Itachi killed their entire clan, the Uchiha clan, only to prove that he could. Driven by revenge, Sasuke managed to kill his brother years later. He learned later that his brother was in fact a spy for a rival clan. After learning that the Uchiha clan planed to attack the rival clan, Uchiha was order by the latter to wipe out the Uchiha. He did so but was couldn't bring himself to kill his younger brother, Sasuke, who knew nothing of the rivalry between the two clans. Note: Uchiha Itachi would have died of an illness, but prolonged his life so that Sasuke could kill him, as he actually loved his younger brother and wanted him to become stronger.
That was in the time of the third, but it was not the third, the order came from the assitants and highs rulers of konoha, the third simpatized with the uchiha and itachi encomended sasuke to the third.
If you really want me to give you a spoiler,then yes.Sasuke did kill his brother,Itachi Uchiha,even though he never knew the actual reason for itachi eliminating the entire uchiha clan,besides him and Sasuke.But that's another story
The 1rst Hokage and Madara Uchiha didn't get along well. So Madara left his clan. Then in the attack by the 9 tailed fox, all the people blamed the Uchihas, because only Madara could control the demon with mongekou sharringgan. And Itachi was born into one of the ninja wars, so Itachi naturally HATED wars. The Hidden leaf village elders backed Itachi into a corner saying that if Itachi didn't go against his own clan there would be another war, on the other hand... Itachi was also being pressured by and family. The Uchiha clan was planning against the Hidden leaf elders. So Itachi was backed into a deep corner by both the Hidden leaf Elders and his family. He decided that he would take the Hidden leaf elder's word and killed his clan with the help of Madara, but the one thing he couldnt do... was to kill sasuke. He loved Sasuke so much that he couldn't do it... afterwards he went to the 3rd hokage and said for him to protect Saskue. But the 3rd Hokage died and Itachi immediently went to check on Sasuke. But Sasuke, thought that Itachi killed his family for power, and killed Itachi. And then later found out Itachi was just trying to protect him. </3 And so now he's trying to kill the elders, and destroy the Hidden leaf village. Hmm, hope this helps! llD
Itachi left Konoha after he wiping his whole clan off xcpt his little brother "Sasuke". Itachi Killed clan coz, it was an order givn by the 3rd Hokage as he was afraid tht the Uchiha clan will break out a riot & conquer the Hidden Leaf Village. Itachi accepted the Mission undr 1 condition, tht ws "nt to kill his little brother". Itachi lovd his brother sooo much, he wntd him to become stronger thn Itachi. After eliminating the whole clan Itachi lied to sasuke to build hatred in Sasuke so he wud follow it & become strongr. Then Itachi ws givn a new Mission, tht was to "leak out the info about the AKATUKI". so he did it. But the Elders, Hokage & Danzo were the only ones who knew truth about Itachi in the leaf. They Kept it as a secret for the whole time. Itachi Returnd to the leaf aftr the 3rd's death, coz only to remind Danzo & the elders tht he ws alive & they Stil shud keep it as a secret. Itachi fought sasuke almost BLIND during their last battle. Even thn Itachi nvr stoppd lovin his brothr.
no .... wow watch the fight between sasuke and itachi at the end he finds out itachi still loved him(in a brortherly way)and he killed his clan because he was under order from the hokage and then had evil expectations to the leaf
Because after Itachi finished killing the entire uchiha clan (except for mardara and sasuke uchiha) he tells him to kill his closest friend like he did and after so he must come to meet with him with the same sharingan he has, mangekyo sharingan. In order for sasuke to possess magekyo sharingan, itachi believed he must kill his closest friend as he did to ShiSui Uchiha and then he will be able to see him.] Sasuke grew up with a hatred for his brother and that hatred made him stronger. I dont want to be a spoiler though so i cant tell you what happens... Sorry lol but i hope this satisfy's you enough.
mandara uchiha who also persudaed Itachi to kill his family wrong in order to get the mangekyou u have to kill your best and madara was not his best friend becuz hes still alive ---------- His best friend was Shisui Uchiha, he killed him in order to get the Mangekyo