I don’t think that anyone should kid themselves by saying that people are willing to blow themselves up and kill innocent men, women, and children purely because a small number of people in the United States are mean to them. If we look at instances in history where groups of people were genuinely oppressed in Western countries, they didn’t result in the mass-murder of unarmed civilians. Black people before the Civil Right Movement and Jews under Nazi Germany to say the least. I hate this justification of terrorism. It’s true that the invasion of Iraq was a disaster and it upset the balance of power, but Iraq under Sadaam Hussein was just as much of a shit hole as it is now, except the murder is coming from sectarian conflict instead of a violent dictator.
I think you also missed the point. The point is not to justify or say “this is the only reason people become terrorists,” the point is that it sure doesn’t help, does it? Every time someone is an openly racist prick, it makes radicalization that much easier when you feel spurned, hated, and isolated. It makes justifying violence that much easier when you feel spurned, hated, and isolated. When you’re a refugee or immigrant or minority or a white dude or anybody in a community that supports and helps and accepts and loves you, you’re not going to be as likely to want to blow them up.