here's a portion of the footage. we want to warn you, it is disturbing. more surveillance video shows a man acting violently inside the store. you can see him swinging a metal bike lock at a woman and pulling her by her hair. continuing to strike her until she is bloody. that suspect was shot and killed by police. with more on all of this, let's bring in sergeant sheryl dorsey, retired lapd sergeant and author of a new book called "the confidence chronicles: the