Gun-grabbing crisis vultures just can’t let the latest mass shootings go to waste. “Red flag” laws are now all the rage in the Beltway as the magic pill to prevent homicidal maniacs from wreaking havoc on the nation. Even President Donald Trump has endorsed the idea of preemptively confiscating people’s firearms if they are deemed a “threat.” But if you want to know how this American version of China’s social credit system would work in practice, let me remind you of how Veterans Affairs recklessly red-flags “disruptive” citizens without due process, transparency or accountability in the name of “safety.” Government...