"Everyday, Fox anchors and staff receive a memo informing them what should be dispersed and what should not."

To be fair, every major network - radio and TV as well as newspapers do the same thing. Each organization has editors who meet with their staff to determine what are the major stories and they cover it as such.   You won't find a single memo telling their staff to portray liberals in such a fashion, although it can be couched so that the outcome will be pre-determined.

I have no love for Fox News. They have created a circus, and a very successful one at that.   News used to be a losing proposition for networks, they only aired it because they basically had to.   Once people like Ted Turner showed that news could be a commercial success, then others began jumping on the bandwagon.   Fox came out of nowhere - the network did not have the infrastructure of an NBC and they had to build from scratch.   They developed news personalities and sold the network that way.