but never to me. >> reporter: rodger's digital trail paints a life filled with rejection, loneliness and childhood bullying. his plan to methodically kill those who he believes shunned him. he singled out his roommates in the manifesto. writing. the first people i would have to kill is my two house mates to secure the entire apartment for myself as my personal torture and killing chamber. those are the roommates who reported to police for petty theft. >> we have to stop and look at every piece of this so it never happens again. not at santa barbara or any other place in the world. >> in isla vista sunday, a moment of silence. the community leaning on each other in times of tragedy. the father of chris michaels martinez calling for changes to the nation's gun laws. >> because i'm emotional it doesn't mean what i say is irrational. nobody needs to own three