It happened in those convulsive days after the killing of George Floyd, when every major city erupted in demonstrations. Things were moving so fast you couldn’t keep up. One day I glanced at the news and saw a photo of a skinny white guy, whose grotesquely contorted body lay face-down in the street. Black blood was pooled beside his head. Then I saw that this happened right here in Dallas—in Deep Ellum, the nightclub district. I was shaken for the rest of the day. The news was sketchy at first, but it appeared that a bunch of guys kicked, stoned,