flash mobs are not unique to philadelphia. in the past six months they ve become frequent in cities from jersey, washington, d.c., chicago, chattanooga, las vegas and st. paul. there are also rob mobs, what you are seeing there. television and radio stations trying to help put an end to the practice by recruiting hip-hop arties to make public service announce s, art tesses to make public service announcements. kelly: any chance the impetus could be gang activity? a lot of it is. it is hard for law enforcement to track in. facebook and twitter is impossible to control. text messaging, friends get together, gangs as well all it takes is a few bad apples to make a lot of violence happen. kelly: so true, so dangerous. julie banderas, thank you. jamie: the financial wakeup call was heard loud and clear. america losing its aaa credit