Who killed those 5 homeless people in Long Beach ?

This poem is for them..."The homeless are close to the streets, to the pavement, the curbs and the gutters, the concrete, the litter, the sewer lids and fire hydrants and waste baskets and bus stops and store fronts. They move slowly over familiar terrain, day after day, stopping to talk to each other because time means little, stopping to watch a stalled car in traffic , a new drug dealer on a corner, a strange face on their turf. They sit on their sidewalks hidden under hats and caps and behind drug store sun shades, and like sentries they observe every movement. They hear sounds of the street, they absorb the odors of diesel fumes from city buses and fried grease from cheap diners. The same cab pes twice in an hour, and they know it. A gun is fired in the distance, and they know where it came from. GOD BLESS those 5 souls.