“You have no right to make your case” is an argument people make when they don’t have a case themselves. And that’s true of religion as much as anything else. If your anti-atheism argument focuses on why atheists are bad people just for making their case, maybe your case for religion isn’t very strong. Pass it on: if we say it enough times to enough people, it may get across.
Oh, quick note about Twitter: Some people have asked me to make the Memes Twitter-ready. I think I’m not going to do that: I already have a hard time saying what I want to say in 420 characters for Facebook, without trying to say them in 140 characters for Twitter. But if you want to edit these down to a Tweetable format, I heartily encourage you to do so.