"I was getting abuse every day," says Mr. Duckworth, who left his job due to a knee injury inflicted by a would-be shoplifter.

达克沃斯先生说：“我每天都要被这些不文明的行为折磨。”而他现在已经不干这个工作了，原因是他的膝盖被一个可能成为入店盗窃犯的人弄伤。