Well, nowadays there do seem to be a lot more atheists (especially like Richard Dawkins) aggressively trying to persuade people against God, than there are religious people trying (aggressively or not) to persuade people otherwise. So, if you think that aggressively trying to change people's beliefs is evil, then yes, today's atheists are evil. But if not, not.
Centuries ago, yes, religious people really went to town with aggressively trying to change other people's beliefs. That wasn't atheism versus religion, it was one brand of religion versus another. But it was quite evil.