Just like everything else in this country, a few bad apples ruin it for the rest of us.
My dad is a retired cop, very honest guy (though maybe I'm a bit biased). Most of the guys on the force were genuine good guys, of course there was 1 or 2 jackass's that would do stupid shit.
If a chest cam is going to eliminate the contradictions between the cop and the suspect, so be it. A few thousand people died 13 years ago in a terrorist attack and now the rest of us who want to fly on a commercial aircraft are treated as potential terrorists.