Wu reflects on bicyclist's death and discusses her vision for street safety PlayBicycle advocates turned their anger on Boston Mayor Michelle Wu after Louisa Gag, a city transportation planner, was struck by a truck and killed while biking in Mission Hill last month. Thousands signed a letter accusing Wu of slow-walking the transportation safety agenda she ran on. But the tragedy is also personal for the mayor. Gag once interned in Wu's old city council office. Wu joins WBUR's Morning Edition to share how Gag's death is sitting with her.