"Atheists, what would happen if there were no Christians?"
More and better things, I presume.
"Would USA exist today?"
Yes.
"What if there were no pilgrims?"
Then this big continent would probably still be unknown to us. Wait, wasn't it the religious people who opposed the idea that the Earth might not be flat? Without Christians, America would probably have been discovered much earlier.
Religious people are like the fly swatters on Vogsphere in the movie "Hitchhiker's Guide to the Galaxy".
"Telling Indians that they are living like animals."
Now they're hardly living at all. That's not really better.
"No African Americans..."
No. Maybe the world would be sane instead and call a person that you want to refer to in a skin-color context actually "black" and not "born in Africa/Australia/..., but living over here".
"No Pope. No Crusaders..."
You are not helping your case.
"And we all be living under Kings and Queens and Emperor and live in Europe forever... still."
Definitely not.
"So do you dislike Christians that much?"
I sincerely hate them. Probably with exceptions. But there are always exceptions from rules.
"You're saying we are living backward?"
Yes. Preaching insanity is backward. To oppose the one tool we have to gather objective data from the objective reality around us is backward. Science supports the imperfect perception apparatus of the human brain (e.g. too much interpretation), but to see the world for what it is is of course not in the interest of people who want to live in a phantasy world. Goddamn child abusers!
"Everything we Christians accomplished in the past and today..."
Really not so good.
"You don't appreciated it?"
No.
"What if we do something about the Middle East, and change everything there... maybe those people will be like us... Maybe their future children will appreciate us Christians."
YOU GODDAMNED IDIOTS AND YOUR FANCLUB MENTALITY!
You have no truth! All you have is Nazi Germany power of deluded masses.