No-one believes either of those things. You should familiarise yourself with the arguments and beliefs of people outside your ideological bubble.
To be charitable, I suppose what you mean is: "I don't believe gays/blacks are being genuine in their efforts to promote their agendas" and "there has been significant election interference, including against my preferred candidate (Trump|Clinton)."
Note that the latter belief is also widely held by those who preferred eg Clinton in 2016, including Clinton herself, who has loudly and proudly declared repeatedly that she would/should have been president but for election interference.
So if the latter belief is enough to get someone canceled from their job, and you support that, then I guess that includes about 90% of the population. I don't think you're being reasonable here.
As to the former belief, I think looking back at how Black Lives Matter has turned out should be enough to convince most reasonable people that some of the biggest/loudest agendas promoted over the past few years aren't genuine.
As to your last assertion, you're correct. No-one is getting canceled over minor quibbles over tax rates. I don't know anyone who is claiming that.