What about the things we have done to them? slaves from Africa, colonising India.... what about the things we continue to do to them? Invade their countries, turn them into war zones.
These people are mentally disturbed, you however are not. So why make such despicable comments?
you don't need to fall to their level, have compassion in your heart, we are after all human- it is not us against them. This upsets me too but trust me, this is nothing compared to what Isis is doing to people in Muslim countries.