My advice is to grow up and quit complaining about something that doesn't have to bother you.
BTW, where did you get the notion that Fox was anything more than a television network seeking the widest possible audience? I am unaware of any particular political stance they have taken.
Why take on Fox? Well, Fox is well-known as the “conservative network” and gets hammered by liberals for any hypocrisy or stupidities like foul and obscene television shows. Fox is an incredibly influential network to the countless children who could see a show making fun of JFK’s bloody head.
The good news is that Fox probably has more conservatives working for it than most other networks. So they have at least a shred of a conscience and common decency. These employees are probably secretly appalled by jokes making fun of JFK’s bloody head. So we must try to influence those people in positions of responsibility, not 20 year old nitwits who delicately spell out the word G-d but seem to have none of G-d’s gentleness and grace.