> I also oppose fascism, militarism, racism, sexism, homophobia, and transphobia, like what A/I do... And none of that is illegal... At least not in any civilised society. So what did they do to trigger so many?

Do you oppose using standardized tests to determine which applicants should get admitted to selective public universities? This is a specific thing that was halted in California because activists argued it was illegally racist (https://publiccounsel.org/our-cases/smith-v-regents-of-unive...). You'll probably find that lots of ways you relate to people around you as gendered beings, men and women, count as either sexism, transphobia, or both, at least according to some activists' definitions. I do not assume that when a political activist group claims to oppose racism, sexism, or other ostensible hostility to a demographic group, that they aren't trying to define this in a way that would result in an immense restriction on your rights, freedoms, or quality of life if enacted.