20 May was the second annual "International Draw Muhammed Day". On this day people across the world hide behind the cloak of free speech to attack Islam. I have included the link here, but I would caution against following this unless you are certain not to be offended by images of Muhammed.
Just to set the scene, I think a lot of people misunderstand what exactly the rub is for Muslims about drawing Muhammed. It's not so much about respecting the guy in some odd way as it is potentially undermining a central tenet, or mystery if you will, of their religion. As much as Christians might say "Jesus lives in all of us", the point of the faceless Muhammed is to lead Muslims to the understanding that all of us are Muhammed. You don't draw Muhammed because Muhammed is everyone - his identity as a historical figure transformed into a spiritual concept, in a similar fashion as Jesus (though with obviously different methodology and dogma). So while they may certainly be irked that people are disrespecting their beliefs and tradition, the main issue for them is the concern for their religion itself being undermined should the practice become widespread. At the same time coming out and saying that would be undermining one of the mysteries of their faith, so they're rather stuck seeming even more irrational than usual about the matter. You can find out more about Islam at the following link - just keep an open mind: http://learnaboutislam.org/
Broadly, the images attack a variety of conservative and radical elements of Islam, notably the oppression of women and the rise of fundamentalist terrorism. While it would be legitimate to point out the existence of these phenomena, to paint all of Islam in a negative light is really unfair and unjust. To take the two aforementioned examples (sexism and fundamentalism), it is clear that the Muslim world isn't the only place where these are happening. However, our Western ethnocentrism makes it incredibly easy to "other" Muslims as attribute these terrible things as part of Islam.
What needs to stop, in my opinion, is the polarisation between the West as tolerant and rational and the Islamic world as suspect, backward, and prone to fundamentalism. I think it is perfectly acceptable for Muslims to rebuke their own religion, but for non-Muslims to do it is another story - it is judgmental and dismissive. In the event that a non-Muslim is going to make critical commentary on the religion, I would expect it to be respectful and productive, not inciting hatred and provoking a violent or aggravated response.