The "What Would Clark Kent Do?" filter works surprisingly well. Here's a partial list of things I'm pretty sure he wouldn't do:
Make fun of fat women.
Make fun of ugly women.
Make fun of menstruation.
Make fun of the disabled.
Insult the parents of dead soldiers.
Extort his allies ("Eh, nice country you got here, be a shame if somethin' happened to it.")
Go into business with General Zod.
Praise the way General Zod handles the press and dissidents.
Suggest that General Zod could maybe help him get rid of his enemies.
Lie; then when confronted with that lie, double down or deny.
When caught bullying, retort "Can't you take a joke?"
Blame his failures on everyone but himself.
Appeal to people's worst instincts instead of their best.
Really, the list is practically endless. I keep waiting for a modern-day Joseph Welch versus Joe McCarthy moment, but I'm not sure we have it in us anymore. Decency is too old-fashioned.
I don't expect to change anyone's mind, and I'm breaking my rule about not doing politics online. Might regret it; don't care. I had to stand up and be counted. Clark would.
Here's the above comic laid out in two pages, which I wasn't sure would be readable at blog size. Click to embiggen. Thanks for your indulgence.