Sounds like you want Fox to defend the cop because you hate Fox so much. I watch MSNBC once in a while and don't automatically assume that everything they say is knee-jerk anti-cop (although often they are), and I don't assume that everything on Fox is knee-jerk pro-cop.

The difference that I notice is that MSNBC has a lot of hosts who tend to make judgments before all the evidence is in while the hosts on Fox tend to go with the evidence. The one recent killing where I disagree with some of the hosts was on Eric Garner, although Sean Hannity did say that the cop put pressure on Garner's back and said he believed that killed him, which I agree with. Personally, the only Fox hosts that I really like are Greta van Susteren, John Stossel and Neil Cavuto.