You may have herd about a woman who used a crowbar to destroy a painting of Jesus involved in... well let's just say he was depicted doing things Jesus probably didn't do. The woman is clearly a Christian who was upset at the demeaning way Jesus was portrayed.
I really have mixed feelings on this one but I simply cannot say that what she did was acceptable. A little while ago I shared an article about the difference between Christianity and Islam and one of the main themes is that Islam portrays God as so utterly greater than us that we could never dare offend him (and those who do must be punished) while Christianity believes God humbled himself accepting suffering and death at human hands. They tortured and killed Jesus; while it's not pleasant to see an offensive picture drawn f him it shouldn't be a surprise either.
I'm not going to give advice on how to react to this stuff. I honestly don't know the right response other than that I'm called to love my God with all my heart, soul, mind, and strength and to love my neighbor (including a guy who would paint Jesus like that) as myself. While that means we must stand up for the truth and declare it loudly it also means we do so "in charity" as Pope Benedict says. Charity generally doesn't involve crowbars.
The Pope's trip to Britain again comes to mind. The man was drug through the mud over and over leading up to his arrival but when they actually saw him and sensed his sincere love all the ugly rhetoric melted away. Howe different would it have been if a bunch of the Pope's Swiss guards had gone in and impaled a bunch of people with their halberds? I doubt the Pope's message would have been as warmly received.
So I guess regarding this particular piece of "art" a response I'd support is firmly denouncing it as something we don't appreciate, answering any valid questions it raises, and then forgetting all about it. After all, anyone who sees it and agrees already hated Christianity anyway. Most people will see it for what it is; an immature attack on a man many people believe is the Son of God.
I know one thing is for sure; Christians will continue to be persecuted. We'd better figure out how to deal with it when it comes.