Daniel Greenfield, a Shillman Journalism Fellow at the Freedom Center, is an investigative journalist and writer focusing on the radical Left and Islamic terrorism. After a long cross-country flight, I made it out of LAX and into an Uber. I wasn’t in the mood to talk, but the driver was. And hearing that I was a journalist, he wanted to tell me a story. I’ve heard a lot of stories over the years, but this may have been the most important one I let go. He hadn’t always been driving an Uber at 11:30 at night. Not all that long...