it is a sin
A Muslim or a muslimah not a kafir or infidel
Calling another Muslim as Kafir (infidel) which can be a cause for killing another Muslim in extreme cases like for ISIS.
Yes. Lying is a sin (1 Corinthians 6:9-10).
lying
Yes cheating is considered a sin. Cheating on a test or to any other person is a sin because by cheating you are being dishonest. Being dishonest is just like lying. And lying is a sin.
homosexuality is a sin but however not a crime lying ( to some extent ) is a sin but not a crime
It's a sin
No, he is Mexican...
The Quran says nothing of killing infidels and probably they wouldn't (until the day of judgment maybe)
Infidel
Islam teaches that Muslim warriors will receive many rewards for dying in battle against infidel forces. That is why they are willing to fight and die in battle.
Yes...it is one of the 10 commandments