another police-involved shooting over the weekend left two people dead. there are breaking developments today. mayor rahm emanuel s office announcing major police reforms including mandatory 30-day desk duty for cops involved in shootings and also a review of police crisis policies. but it s no consolation for families of the victims. a 55-year-old mother of five who police say they shot accidentally and a 19-year-old college student who police say was combative and threatening his father. the independent police review authority is now investigating. want to get right to msnbc s sarah dallof who is covering this story out of chicago. tell us more about the reviews here and especially when you pull back from the mayor s response and the reviews going on, the more underlying issue of tension there between the community and police. reporter: yeah. these are all very important topics here. the mayor s office responded very quickly to these deaths over the weekend, saying that he s alread