My wife has been best friends with the same person since they were in middle school. They were roommates in college and they still get together at least once a week, after several decades of being close. My wife and I are fairly progressive, her best friend is a Fox-watching conservative who voted for Trump in 2016 because she was 'sick of poor people getting everything'.
At least once a month they have a blow-up fight due to the friend parroting some Fox talking point and my wife telling her that she's wrong and awful for believing that shit.
I agree with my wife when she points out how horrible it is to compare government shutdowns to Nazi occupation; it's complete bullshit drummed up by Fox to rile up the masses. But screaming at people that they're stupid, racist, horrible etc... just reinforces the 'Elite democrats want to control you' narrative that Fox et all are pushing.
For way too many people, Fox is 'the real news'. I don't know a way to get people out of that bubble, but I know that aggressively calling them racist is more likely than not to cause them to dig in their heels.