debate. how this consequential week, setting the stakes for the next election. but first, aaron oh heard with the other big stories we re tracking this hour on msnbc. erin? thanks ali show. legendary game show host bob barker has died at the age of 99. the longtime host of the price is right passed away of natural causes at his home in hollywood hills. and, two people have been arrested in connection with a shooting during boston s annual caribbean carnival saturday morning. seven people were shot and transported to a hospital with non life-threatening injuries. police say the shooting was not related to the parade, and festivities did resume later in the day. and in oklahoma, a shooting at a high school football game left a 16-year-old boy dead. police say an argument between at least two men lead to gunshots friday night. at least four other people were injured. so far no arrests, but investigators are searching for a person of interest. more american voices, right after this break