In San Jose, California on Sunday, 33-year-old Haamid Ade Zaid crashed his car through the front of a Walmart into a beer display . . . got out of the car . . . and immediately started attacking customers with a "blunt object."  One person was seriously injured, and another three had injuries that weren't life-threatening.  Zaid was arrested, and is thought to have been under the influence of drugs when it happened.  Here's a news report.