Both political parties are made up of constituent cohorts. All Republicans are not anti-immigrant, anti-trade junkies in the same way all Democrats are not anti-work socialists. I think you'll find farmers in particular are generally much more pro-trade and pro-immigrant than the rest of the party.
The story is these farmers voted for Trump despite him tilting against their best interest. But the reality is they probably put up with his views on immigration and trade hoping they would be more than offset by his views on land use and tax policy (and have been sorely mistaken).
I know that people really want to make schadenfreude out of this But when the shoe is on the other foot and Republicans make these same kind of ad hominem attacks they equally fall flat. No, just because someone voted for Joe Biden doesn't make them a police-hating communist.