Do you know of any private firms that disappear people who speak out against them? Governments have been doing that for millenia, but I can't think of a single

Do you know of any private firms that disappear people who speak out against them? Governments have been doing that for millenia, but I can't think of a single private firm that has done so. The US government has a military and intelligence budget north of $600 billion and operates secret prisons around the world.