I’ve made this point before on the Twitterz, but we’ll outsource the long version to Greg Laden (boldface mine):
Where I grew up, all the white people sorted out and looked down upon each other by closely defined European ethnicity, and all the white people feared and distrusted all the black people, and there was one Japanese guy. But, we knew about, were told about, Puerto Ricans. That was in upstate New York, and New York City had a lot of Puerto Ricans, to the extent that as a child I thought Puerto Rico was an island just a few miles off New York City (because I was told that, don’t know why). White New Yorkers historically disdain Puerto Ricans because people from Puerto Rico represent one of the largest Hispanic groups in that area, or at least, did for many decades, while certain people were growing up and doing business.
To a bigot Trump’s age, Puerto Rican was a common pejorative. That doesn’t mean Trump won’t like ‘the good ones’–bigots often do. But the initial lack of concern for Puerto Rico from the White House wasn’t helped by Trump’s biases.