I don't think he likes black people or Hispanics.

To be fair... that makes him no different than a lot of Americans. Though he may be in the minority here on HN.

I see the noun "underclass" here more as a factual description. Blacks and latinos are (especially in NYC!) treated like 3rd-class citizens, and they're far more likely to end up in jail for stuff a white person would just get a slap on the wrist.