Oh come on guys.

Are we expecting our police to have mind reading abilities? maybe perfect character evaluation skills? You've got a young'un in a store with blood splattered all over his shirt, maybe face and arms too, and you expect everyone to just glance at him and know instantly he was working hard all morning dehorning calves? :lol: If the police hadn't stopped him I'd be pretty concerned about the condition of our police force!
Sounds like they were offering helpful advice by telling him it'd be a good idea to change before going anywhere else - although it seems like a no-brainer at that point, LOL - doesn't sound like harrassment to me. And it probably would have been a good idea to change into something clean pronto, rather than continuing the course through the store, scaring little old ladies half to death. :lol:
But then I've never been accused of doing a perfect job picking up subtle hints - maybe I'm reading it all wrong.