You've most likely have been seeing violence, and or being abused. Call for help.
many thoughts. mean thoughts. some of them are-getting even, killing him, and more
Killing a born human being is always murder.
assuming it is a biblical quote, it will mean god hates the thoughts of evil people
killing people
Massacre is the mass killing of people.
If you mean the girl that was killing people..... she is zoe saldana
Jayfeather does not and will not regain his eyesight.However,he can see in his dreams and visions(I mean when he looked into Ivypaw's thoughts of her killing all of Thunderclan). Sorry,that was a spoiler.
Guns are to protect people and not for killing people because killing people for no reason is a crime but killing people to protect your self is not a crime
It just means bad luck.
Private thoughts are thoughts that are not meant for everyone to know.
No, there's no record of him expressing any regrets.
We are not sure what you mean by effective, but if you mean "effective in killing you," the answer is yes.