Yes, Islam and Christianity both have a penchant for holy wars.
There are many large organizations that don’t put so much effort into shielding abusers.
Anyone who called out the evils of the Nazi regime was persecuted, including atheists who were often labeled ‘Russian supporters’ due to their lack of faith. ‘Godless’ communists were the first targets of Nazism.
I think most modern anti-theists aren’t interested in forcibly converting anyone, they see the rise of atheism as inevitable. They want to remove religion from schools and public life, stop posting the ten commandments everywhere, stop putting ‘god’ on money, etc. at least that’s what I hear about.
I don’t think anti-theists need to be advocates of forcing people to stop being religious, they can simply be opposed to theism. Like I’m opposed to the smoking of tobacco, but I’m not interested in prohibiting it, I just think it’s unhealthy and the world would be a better place if there was less of it. I think that’s how many anti-theists feel about religion. At least that’s the impression that I get from talking with them.