I agree, sad thing to happen, and motorcycles and bicycles each have their own issues on the road.
Since this is Advocacy and Safety... One might want to ask about lane positioning.
2 straight through lanes, 2 turn lanes.
In some cases one will choose to come out on the left side of a one-way road, and start far to the left. But, usually one will choose to come out on the right side of the road, so positioning oneself in the rightmost turn lane.
My general rule is to position myself in the middle of the turn lane if I am the first one in line (or try to find one of those signal sensors and hope the bike activates it). If there is a line of cars, I'll generally just get in line behind the back vehicle. In that case, I'll generally position myself just to the right of the last car (avoiding sandwich position). I'll generally not lane-split and filter forward.