https://www.youtube.com/watch?v=2KUMb_7LH9QAt about the nine minute mark, Trump tells a story about a man whose son was murdered by an illegal immigrant and sounds very heartfelt about it. Then he brings up on stage about a half-dozen parents holding pictures of their children, all murdered by illegal aliens, and hands the microphone over to them for almost five minutes.
I don't think he can do this at every rally or it will start to look like he's making a political opportunity out of horrible murders, but this seems like a very effective new direction for him. The woman who started crying at the microphone honestly made me choke up.