players and fans ran at a shooting at a nasals ballpark. a 6-year-old was killed in a drive-by. murders are up this year after a dramatic 19% jump last year. >> i see people doing violent crimes and i see them back in my community months later, and it breaks my heart. >> reporter: the police chief walking the neighborhood. >> i've been talking to residents along the way, and people are really mad as hell right now. i don't blame them. i am too. >> reporter: it's happening nationwide. philadelphia on pace for its most murders ever. jackson, mississippi, likely to set another record. portland, oregon, reporting a pandemic of gun violence. in chicago, 50 shot, 11 last weekend. what's behind the surge? experts cite the pent-up