My favorite WaPo article about guns was the one a few years ago where they talked about the dangers of assault weapons that shoot high powered silenceable snipe

My favorite WaPo article about guns was the one a few years ago where they talked about the dangers of assault weapons that shoot high powered silenceable sniper rounds like the Ruger 10/22. If a .22 is considered high power I'd love to know what they classify as low/medium.