Books? I don't think so...

Well the other day a fellow coworker was assisting a customer at one of my current places of employment and as he was assisting her the customer had failed to tell him of the large amount of weight in her package and as he lifted and the weight shifted pulling his shoulder with the box. This led to my coworkers shoulder being dislocated. The lady never said sorry as he started to weep from pain. She simply ignored him and expected to him to continue helping her. With that my manager stepped in and let him go home. How can people be so cruel and unfeeling? That's what I am wondering.