If you only learn about the Atlantic slave trade, European colonialism /British empire and civil rights in the USA - though they are important subjects and I’m not saying you shouldn’t learn about them at all - you effectively continue to centre the west and a Eurocentric worldview in the interests of doing penance and “eliminating colonialism from the curriculum” while sidelining the rest of the world.
People who have a problem with wokery are not just right-wing fascists who think colonialism and slavery are great, and that kneejerk reaction from woke types when criticised is very telling. They can’t even understand that wokery could be criticised from a reasonable, humane, or leftist or centrist viewpoint.
For me a major problem with wokification of curriculums etc is that it’s dishonest and self-serving. It’s not about actually changing power balances or promoting a fairer, more cosmopolitan view of the world. It’s about scrabbling to jump on a bandwagon that lets you off the hook for being white, European, western, or privileged in whatever way by showing how much you care about declaring how bad colonial is/was etc. It still centres the colonisers and their arenas. It’s just box ticking and that box-ticking is worse than useless as it leaves those who do it free to continue with the same old power imbalances and prejudices.
At our primary school we had all the social justice right-think, no one must ever be excluded or made to feel bad, we’re all one big happy family, racism is evil all the time. Then they put on a Christmas play called “Christmas around the world” that showed a whole bunch of racial stereotypes of people around the world celebrating Christmas - including people who don’t/wouldn’t - and including racial stereotypes of some of the kids in the actual school.
Because no one thought for a second to actually apply the concept of being open to differences and respectful and not centring western concepts at all. They’d ticked the boxes and carried on without a second thought, smug in the knowledge that everything was lovely and welcoming and inclusive.