Then, there was the polite armed robber

From KSAT-TV:

"She said that he apologized," said Sgt. Brian Custard of the San Antonio Police Department. "He thought she was a young lady and didn't realize she was older and crippled. (He) even offered to put the gun up if it would make her feel better."

Wow. I hope he gives up his ways before he comes across a young woman. He may not be so nice next time.