"Light Them Up!" - Police fire paint on people standing on porch during curfew

In the below video, the police can be seen marching through a quiet street ordering everyone into the house. They stop in front of the house of the people filming and open fire when one of the officers screams "Light them up!".

According to Minnesota FAQ on the curfew the people had rights to stand on their porch during curfew hours. The governor had explicitly mentioned in a televised address that standing on one's property was perfectly legal.