Most atheists are aware that most theists have their own image of god and disagree on every single aspect of their religion. While in order to keep their flock fearful, preachers demonize atheists causing the flock to think atheists are all devil worshippers http://imgur.com/u1hWgfr.
Theists, I would specifically say Christian, tend to just assume Atheists worship Satan and want to be all tribal. That's just simply not the case. I understand more about what others believe than ever as an Atheist, and I find that the more dogmatic Theistic religions like Islam and Christianity don't even make an attempt to understand the secular world-view, rather just demonize it, and literally want to put us in concentration camps (not joking, look it up, Ted Cruz's Dad.)
they seem to have more trouble understanding atheism, than atheists have in understanding religion.
I feel like atheists do a lot of generalizing but overall Christians take it a whole notch further. Many Christians believe atheists are horrible people without a moral compass and with nothing to live for which is the furthest thing from the truth for most atheists.
As an atheist I understand that theist are all diferent many atheist like me came from religious familys thus seeing there point of view but not many theists seem to come from atheist familys. also theists have more culture and things showing that they are a certain belief wile atheist usuly don't so I think its easer to put athiests in one group
Theists are more apathetic, while atheists are pretentious and condescending, all the while NEVER SHUTTING UP. EVER.
I think its badically tied so i just clicked whatever.
They think that all theists are flat-earthers when in reality, they are the only idiots in the room
Lots (but not all because I don't know all atheists) of atheists think that Theists are anti-gay, anti-woman, and pretty much anti anything. They think that Theists are illogical, irrational, brainwashed and downright silly simply for being theists. I'm not saying that theists cannot be like this, but I have experienced many atheists acting this way.