Over 100 New Yorkers turned out this morning for an impromptu rally to demand that Mayor de Blasio take action to rein in reckless driving on Ninth Street in Park Slope, where yesterday a motorist ran a red light, killed two small children and injured their mothers.

Organized by Doug Gordon, a.k.a. Brooklyn Spoke, the crowd gathered outside the Park Slope YMCA, where de Blasio works out most mornings. As Doug says, these folks are tired of excuses from DOT, which allots two lanes for parked cars on Ninth Street but says there isn’t room to designate space for bike lanes.

As you’ll see in the video, the protest got the mayor’s attention. Whether he’ll live up to his Vision Zero rhetoric remains to be seen.