George Recine, a Boston advertising executive, knew exactly where to eat lunch last week during a business trip to Philadelphia. “What better place to stop by than Goldie?’” he said. Recine, 45, had read reports about a protest there a few days earlier that had drawn condemnations from Pennsylvania’s governor and the White House. A crowd carrying Palestinian flags had gathered in front of the popular falafel restaurant, co-owned by an Israeli-born chef, and chanted, “Goldie, Goldie, you can’t hi