[koax]

oh, i get it, i'm right, but wrong!

[justshutupandtakeit]

Only by extending your concept to include "acquaintances" are you right. Such as "I knew the old lady down the street a little before I smashed her head in looking fo some crack money." Or "I had seen Jose around the corner a few times before I threw up signals to him and shot him."

It is false that most killers are friends, or kin though many are.