I was in a rescue at a 3th floor abortion suite in (if I remember correctly) Pittsburgh. After arrest, being taken down to the ground floor in an elevator, I politely told the (handsome young black) cop he shouldn't have arrested us. He replied that sorry, he had to.
I said, "Well, you could still help us."
"First, you could figure out some way to empty the building."
"So, that's first. And?"
"And, at the trial, you could say you don't recognize me."
We arrestees were stowed in the police van when we heard the fire alarm go off in the building. Lo and behold, the clinic had to suspend operations and everybody had to evacuate. We learned later they weren't allowed to go back in until Monday (the rescue was early on a Saturday morning.)
Later, when we went to trial, this same cop looked me straight in the eye and told the judge, "I'm sorry, your honor, I'm not able to make positive identification."
Dear Lord, a higher place in heaven for that guy, OK?