Because Christians don't isse fatwas?
I find the following also more offensive that "Suck it Jesus":
Pakistani Christian girl gang raped
http://www.barnabasfund.org/news/archives/article.php?ID_news_items=277Growing violence against Christians in Iraq
http://www.barnabasfund.org/news/archives/article.php?ID_news_items=229Christians persecuted in Aceh, Indonesia
http://www.barnabasfund.org/news/archives/article.php?ID_news_items=216THREE INDONESIAN CHRISTIAN GIRLS BEHEADED
http://www.barnabasfund.org/news/archives/article.php?ID_news_items=59Persecution Increases in Uzbekistan
http://www.barnabasfund.org/news/archives/article.php?ID_news_items=212AFGHAN CHRISTIAN FACES DEATH SENTENCE IF HE WILL NOT RETURN TO ISLAM -
http://www.barnabasfund.org/news/archives/article.php?ID_news_items=137Would Kathy Griffin ever do anything to help tortured/raped/imprisoned Christians? The Religious Right in this country largely doesn't seem to care (witness the Evangelical lockstep support for the Iraq war), and neither does the Left either, it would seem.