Seriously. Think about what you just said.
I have. I imagine it would be the same groups who did the marching last time. The Nazis who marched off members of the Jewish religion and the Stalinist who murdered thousands of Christians.
I honestly don't care if other people are atheists. That's their decision. I am not threatened if they don't want to pray, or believe in God. I don't attend any church, myself. However, I have the right to speak about God and I don't believe that the religion of atheism's imagined "right to shut-up anyone I disagree with" trumps my freedom of expression.