Why is it that you can get people screaming offencive...

For pointing out how outright violent islam is...and I mean it's violent. I personally don't like it because they harm lizards...but still. Christain's books are too, However when I say "i'm a dragon and I serve tiamat and alduin they somehow go "reeee you need to check mental health" and crap like that. So protective of a faith that likes to blow each other up, but not of one which is peaceful