The Iraq War was an enormous mistake, but that is one sick comment. You are, in effect, blaming Hilary Clinton and all those who voted for or supported the war for the Orlando attack. And practically speaking you are totally wrong. ISIS wants those types of invasions from the West. ISIS and people like the terrorist in Orlando want war with the West. So his attack was in no way a retaliation for the Iraq war. 

Your comment shows more your self-hatred (your guilt by association of being American) and hatred for your country.