Ten people were killed, including a police officer, after a gunman walked into a grocery store in Boulder, Colorado, on Monday and began randomly shooting shoppers. A motive for the shooting remains unknown at this time. NBC News' Catie Beck reports.
Ten people were killed, including a police officer, after a gunman walked into a grocery store in Boulder, Colorado, on Monday and began randomly shooting shoppers. A motive for the shooting remains unknown at this time. NBC News' Catie Beck reports.