Hooray, today is blasphemy day!
As you may remember, back in 2005 (on this day) a Danish newspaper published a bunch of cartoons depicting Mohammed. There were a lot of Muslims upset by the depiction of their prophet as a violent jerk, and so they engaged in the only rational response: violence.
Since then, there have been a number of attempts by various governmental bodies around the world to enact anti-blasphemy laws, designed to stifle this sort of free expression. Ireland, for instance, has a pretty nasty new anti-blasphemy law.
There are no enforceable blasphemy laws in America, of course. They'd be blatantly unconstitutional. But the sentiment exists here as well. Some people believe they have a right not to have their beliefs mocked and ridiculed. They don't. There is no right to not be offended.
Obviously, people's rights to believe in stupid things should be respected. They're free to believe whatever they like. But there's no reason the ideas themselves deserve respect. This isn't about making "converts" to whatever belief system you may hold, it's about freely expressing that some ideas are just really dumb.
You wouldn't respect the ideas of someone who thinks slavery should be legal, or who thinks lightning is created by some dude with a hammer, or anyone who thinks that disobedient children should be stoned to death. It doesn't matter that all those beliefs are based on religion, they're still stupid and you have every right to say so.
So, won't you please join me today in blaspheming whatever religion you feel like blaspheming?
While I think they're all utter nonsense, you don't have to agree with me to get in on the blasphemous fun. Lots of Christians enjoy blaspheming Allah, for instance. If you're a more timid sort, you could always pick a religion few people still believe in. It's about time Zeus and Odin were taken down a notch! Scientology's an easy target too, since it's pretty socially acceptable to make fun of it. Or you can pick on the most irritating local religions, like Christianity. You might offend some people, but that's your right!
You could also just post humorous/blasphemous videos, like this:
See, it's easy and fun! Happy blaspheming!