Hey you know why people always say "this helps Trump?"
Because the democrats don't have a great answer for foreign-born terrorism. Trump has a crazy, extreme answer (round them up, kick them out, stop immigration), but at least he has an answer.
Clinton's response was really weak. DiBlasio was weirdly avoiding calling it terrorism, instead calling it "intentional."
Yeah by tiptoeing around that kind of stuff, you let Trump create the narrative that he's the only one who really cares. Same thing happening in Europe, right-wing parties are gaining support because the left is perceived as being too "PC" to talk about real issues caused by the refugee crisis.