8700151273_47e9e8c87a_b Published Wednesday, May 1, 2013 - 10:04 pm at 1024 × 765 in Capitol Hill May Day 2013 Open Thread — UPDATE: Clash downtown climbs back up the Hill A “flash ball” detonated on Pine as police pushed May Day protesters back to Capitol Hill. Thanks to Jen for the image. Share this:TweetPrintEmail