It may become necessary for Trump and Musk to show their potential for brutality before people's minds change, unfortunately. But it has worked, in the past. The Kent State shooting is a good example; the obviously excessive brutality of the state caused a massive increase in willingness to speak out, protest, strike, etc. That massive public response became too large to ignore.
I also recognize that by speaking up I may make myself a target for that brutality. At this point, I've decided "so be it, if that happens, it happens."
Evil wins when good people stand by and do nothing.