Think Progress has a graph of Nexis data from the last three months showing how Fox News disproportionately uses negatvie language about Islam:
It is important to not that the word 'Fox' should never be associated with the word 'News'. The data above is clear evidence that Fox is engaged in a nasty smear game in order to gain viewers, not report on actual news events. While CNN and MSNBC at least try to be objective, Fox does not and should be considered entertainment above anything else. There is much money to be made from appealing to people's fear and irrationality, and Fox has made an industry out of it.