PHILADELPHIA - Police Commissioner Danielle Outlaw addressed video circulating on social media that allegedly depicts Philadelphia police officers using excessive force to control protesters during the recent citywide unrest.While some videos show conduct that appears to be within guidelines, Outlaw said Friday that "some of the images are disturbing and depict behavior that does not appear to be in accord with our policies."As a result, the department has launched "several congruent internal affairs investigations," according to the commissioner.MORE: Commissioner: 759 arrests, 27 officers injured in continued violence around PhiladelphiaOutlaw revealed only limited information about the investigations thus far, but assured that she is.