He was the liberal-media darling of the Ferguson protests; now he’s an alleged arsonist. Joshua Williams is everywhere: protesting in Ferguson, Mo., Washington, D.C., and Cleveland, Ohio. He has perfected the skill of catching the attention of journalists and using them to elevate his claims of police brutality to national attention. Quoted or photographed in countless articles in publications including the New York Times and USA Today, Williams claims police in Ferguson, Mo., targeted him because he is black. The truth, caught on tape by National Review Online, is much different. The charismatic teenager is one of Ferguson’s most recognizable...