Telling the difference

Is it easy to know who is lying to you? Can you see in their eyes that there is a gun under the seat? Or, is it about catching the least-prepared, those who leave it all in plain view … it's in plain view, and it's been going on longer than any single presidency. The third branch approved it, the ACLU echews it, and I'd like to see stats on efficacy, please. The Washington Post does give it lots of virtual ink, but I feel some key facts are lacking. Juxtaposing the number of homicides year for year does not explain anything.