Guerrilla art takes bike activism to the streets [SLIDESHOW]

By Ashley Braun

Photo: Biblioteca Salaborsa via Flickr

Ah, the rowdy, monthly bike rallies of Critical Mass – always ready to swarm bike-munching cars and always handy with a can of spray paint.

Ashley Braun is Grist's News Producer and (unofficially) its Official Puntificator. She's also a science nerd, a lazy runner, an organic container gardener, and an accidental "expert" on topics like cross-country relationships and social media.

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