+1 power imbalance. I had to listen to a cop tell me how shitty his day had been for 10 minutes once while pulled over for no reason.

To be fair, he had had a really shitty day, and was 23 hours into a work shift, but there was nothing I could do to exit the situation without causing a serious problem aside from listen and wait.

I listened and wait, comforted him, and then I was allowed to leave.