In collectivist ideologies like the National Socialist German Workers Party, the members of the collective are "race" determined. The excluded races are the enemy and must be extirpated.
In collectivist ideologies like Communism/Leninism/Socialism the members of the collective are class determined. The exploiting classes are the enemy and must be extirpated.
Off course, in the USA, the enemy is anyone who supports Trump. We are scumbag racist white supremacist nazi deluded cultists.
Those who forget history will have to repeat it, right?