Conservatives and right-wingers are the only acceptable target.
Why do you think Kimmel tried to characterize the killer as MAGA? Because he can't joke about him being gay, having a troon boyfriend, being antifa, not even about being a furry. Mocking right-wingers, even if they were victims of murder is considered safe comedy
Not only a team of entirely left-wing writers? But also a team of fact checkers. He's bragged about that many times.
Any writer with even moderate views is fired immediately upon detection. You toe the hard-left line or you're out the door!