I think the example by @DorsetandBeyond is really important. We need nuance above all else when teaching and discussing these issues. This ridiculous tribalism is so damaging, and the world is not black and white.
On a personal level, attempting to discuss this issue with some people of my acquaintance has been so upsetting for me in the past, because on the few occasions I tried to relate my own experiences I was shut down because my viewpoint of tolerance and debate did not fit their mould of what a person like me 'should' be saying.
My family came to this country to escape actual fascism. Not this contemporary form of 'I don't like what you say so you're a fascist' but actual attempts at genocide, gassing people, raping women and burning down homes kind of fascism. So hearing white, English, middle class people who have never even travelled beyond Western Europe and the US try and explain oppression to me and tell me I am wrong has been nothing short of galling.
It's one of the reasons I started coming on to Mumsnet in the first place-it's one of the only places (outside of my close friendship group) where these topics can be discussed freely.
These people are not interested in truth, justice and equality, they are looking for a tribe, and the performative nature of social media is the perfect breeding ground for this.
I say this as someone who would always vote Labour, even canvassed for Labour, was a member of a union and very political. I am not anymore. Speak to anyone who grew up in a home country like mine and you will soon realise that we have seen this type of discourse many times: people pitting themselves against each other, suppressing debate, threatening abuse and violence towards dissenters, forcing marginalised groups to go underground. What does that sound like? It doesn't end well.