Today, on my two-mile walk to work through SoMa I saw five people riding bicycles. That's great; according to the SF Bicycle Coalition the number of cyclists in SF has swelled in the last few years.
The problem: all five of those bicyclists were riding illegally on the sidewalk. I saw zero people riding their bicycles legally on the street.
Bicyclists and pedestrians ought to be natural allies in the move toward complete streets. I find it so disappointing that these bicyclists chose to risk injuring or alienating the pedestrians on those narrow SoMa sidewalks.