St. Paul police have released video showing the robbery of a Selby Avenue convenience store in which the clerk was able to pull off the suspect's mask and fight back with a can of food. According to police, a clerk at the AA Avenue Grocery at 682 Selby Ave. was locking up around 10 p.m. on June 8 when a man wearing a mask forced his way inside. The man showed a handgun and demanded money from the clerk, then chased him to the back of the store. In the back, the suspect assaulted the clerk as they fought over...