She added, "Who do you report activity like this to? It was really uncomfortable."
I can understand why a woman would be hesitant to go confront an angry mob. Maybe you should go talk to store management. If they won't do anything, call the cops. And be a little low-key so that you don't scare them off before cops get there. It kills me that an average person would need to be told these things.
Sure these guys are jerks, but isn't killing their dogs a little harsh?