I don't agree with your assessment that all races only hate one race, just that the hatred against one race is now institutionally protected, and more importantly: that doesn't make anything less or more racist.

and all the institutions of messaging (propaganda producers) all targeting one single race and dehumanizing them is more akin to nazi germany.

Other institutions were promoting race hatred. The Jim Crow South was it's own institution. It just wasn't one of the institutions that survived to annoy Americans to this day.