You know you don’t have to say it in so many words, “rural working class America” = poor white people. Of course they love the racist police (who used to catch slaves and enforce Jim Crow). And I say that as someone who grew up in rural America. I just happen to have read a few history books.
Half the people I work with in rural PA aren't white, you're just showing off your own racial bias with such an assumption. They still overwhelmingly support the police.