People sometimes claim that ‘political correctness’ (whatever precisely that is*) is ‘the new censorship’. Usually this is because they’re dickwads.
It occurred to me that perhaps a more appropriate phrase might be ‘the new etiquette’. That is – things like how to ask a transperson what gender identity they prefer, or what ethnic description, etc. doesn’t really bear any relationship to a government sending the secret police to stamp out those criticising it. But they do bear a strong relationship to Victorian Britons reading manuals on how to propose marriage, how to discuss religion, or whatever.
I think this is quite a nice way to look at the matter – though like any analogy it’s not perfect. I like it firstly because it locates the ideas of politeness and rudeness at the centre of the issue, downplaying the element of ‘politics’. It also clarifies the relationship of political correctness to freedom of speech - an etiquette manual aims to help people to do certain things more smoothly and confidently, rather than dictating what they should and shouldn’t do.