If these individuals actually did their research, they;d find that actual supremacist groups like Spencer’s or the KKK have included the same small groups of misfits for decades; and the number of people who are involved with these neo-supremacist organizations like the Proud Boys is also tiny (tiny groups can be very noisy and sometimes dangerous, to be sure).
If they were to review data in established surveys like the General Social Survey, they’d find that the number of actual racists in the US has been falling like a rock for decades, now standing at about 7–10% of the population (depending on how you interpret some of the questions asked), and to the extent that the drop *may* have plateaued this decade, any new membership is actually being fueled by racist millennials, not GenXers or Boomers.
(The number of racists in the US also seems to be split 60/40 between the GOP and Democrats, but that’s an entirely different story.)
Further, if they actually reviewed fascist theory, they’d learn that fascism is an authoritarian philosophy of government (well, they’ll actually admit to that one) which seeks to control the behavior of all actors in an economy and society. Therefore, every time a politician promotes the elimination of regulations or lowering of taxes, they are promoting something that is the OPPOSITE of fascism. (To be sure, that does not mean that all Democrats or “progressives” who support regulations or higher taxes are fascists — there is a large grey area in there between “libertarian” and “fascism” which allows politicians to work to solve problems without regard to ideology — — but most certainly a fascist ideologue would *not* be deregulating businesses or lowering taxes.)
I could go on, but why? People hold to their “new” definitions of these terms the same way a fundamentalist preacher holds on to the inerrancy of Scripture. Reason bounces off of them.