I think the first joke is nothing, a bit silly, but...... Let he/she who is without sin throw the first stone. Nobody is perfect, and I imagine life in the police force is very stressful, so the occasional reaction to stress is to be expected. What did the person being detained do during arrest?.
The Police can't be perfect all the time, yet some people try and force them to be. The net result will be to influence police actions, eg a problem in a coloured area, so should a white police person go in, and risk offending somebody by offending their "rights", often I suspect invented for convenience. Now lets see, it is a Scottish custom to wear the Skian Dhu, tucked into their sock. So I can walk around with one, and not be done for carrying a dangerous weapon ?.
I think the net effect will be to demoralise the Police force, and who ever made this judgement should be sacked immediately.
Ken