victims' initials on them. a picture of the murderer's anger emerging in a video captured just last month showing him in a bout of road rage. >> and you're still [ bleep ]. >> okay, are you finished? >> i've been finished. you followed me here. >> what is going through your mind when you see him in the parking lot and get out in the. >> a lot of things. i got in my vehicle quickly so i wouldn't be in a cage with someone aggressively following me and i was pretty much making a b-line to the store to population, really, to sort of have some other people around because he was obviously not in the right mind. >> in an interview with fox news, alison's father says this is a problem he's now dedicating his life to solving. >> we've got to do something about crazy people getting guns. this is something that is alison's legacy that i want to make happen. >> and that's part of what makes it a difficult balance in these stories. you want to forget who created this violence.