the subject are terrorists. they committed the crime. they also happen to be islamic. therefore they are islamic/muslim terrorists. the subject is not "muslims". muslims did not commit this crime - they committed this crime.
if i go to an mechanic who happens to be jewish and he totally forgeted me over on the repair cost for my AC unit, and i go back to my girlfriend and say "this loving jew prick forgeted my car up", doesn't that seem like you are focusing on a certain aspect of this person?
once again, there are innocent mistakes, and then are situations in which the evidence shows maybe youre innocent mistake wasn't so innocent at all, nor was it a mistake. prove me wrong