I thought so.… It looks like Trump really stepped in it: Donald Trump has a serious Puerto Rico problem — in Pennsylvania. Many Puerto Rican voters in the state are furious about racist and demeaning comments delivered at a Trump rally. Some say their dismay is giving Kamala Harris a new opening to win over the state’s Latino voters, particularly nearly half a million Pennsylvanians of Puerto Rican descent. Evidence of the backlash was immediate on Monday: A nonpartisan Puerto Rican group drafted a letter urging its members to oppose Trump on election day. Other Puerto Rican voters were lighting up WhatsApp chats with reactions to the vulgar display and raising it in morning conversations at their bodegas. Some are planning to protest Trump’s rally Tuesday in Allentown, a majority-Latino city with one of the largest Puerto Rican populations in the state. And the arena Trump is speaking at is located in the middle of the city’s Puerto Rican neighborhood. “It’s spreading like wildfire through the community,” said Norberto Dominguez, a precinct captain with the local Democratic party in Allentown, who noted his own family is half Republican and half Democratic voters. “It’s not the smartest thing to do, to insult people — a large group of voters here in a swing state — and then go to their home asking for votes,” Dominguez said. The timing couldn’t be worse for Trump. Almost a week before Election Day, he’s pushing to cut into Harris’ margins among Latinos, especially young men who are worried about…