I really don't think Maher is so liberal.
Why? You're reminding me of a thing he did about liberals who attack and denounce other liberals for only agreeing with them 95% of the time.
Of course apologizing is a public activity. I am trying to differentiate between people who demand civility and political correctness and people who criticize people for apologizing.
Apologizing to snowflakes over something that should not have offended them is not civility, its spinelessness. Like the actor who issued a grovelling apology to natives because he dressed as an Indian to attend a lone ranger themed party. BTW, it wasn't Indians who complained. Or Justin Timberlake apologizing after daring to voice his respect and appreciation for a speech given by a black man - without acknowledging his white privilege! Eeek!
Can someone articulate a guiding prinicple for a common morality around apologies for me?
Ask your mother. She should have taught you that long ago.