A Mankato man has been charged with third-degree riot. Blue Earth County court records say 20-year-old Brock Stalter was identified as one of several subjects leaving the scene of a local business on May 30th. Authorities say the group was attempting to break into a commercial business by smashing out the front glass doors using rocks and a skateboard. The court report added Stalter told a Mankato police officer that he was protesting but mob mentality and opportunism took over.