I have a new hashtag for your consideration: #BlackLivesMatterSoWhite. Like it? I think it’s catchy and accurate. For all the talk about how black people are taking to the streets to demand equal treatment, one thing that’s curious about the recent spate of protests is that they don’t seem, well, very black. When white people began showing up en masse to these events, people attributed it to bad actors. The right said it was antifa, while the left said it was “white power” groups. There couldn’t have been that many of either group, however — and really, it was mostly...