Dean Putney took the photos of the Long Range Acoustic Device (LRAD) used in the Pittsburgh G20 protest. He says:
My roommate and I went to check things out downtown to see how the riot was coming along. We stopped here along with the news crews and a few spectators to watch. Police came in off of city buses in groups of about 50 or so and down the street (in the UPitt campus) they were setting off smoke grenades, tear gas and using the LRAD. The police warned protestors to leave multiple times over the loudspeaker before and during their use of force.
Shortly after we arrived that one girl threw her bicycle at an officer. My roommate and I are in the news footage of that. We stuck around for a while afterwards, watched these trucks and the SWAT team vans go by, collected a couple of the smoke grenade cartridges and went home. The cartridges are pretty cool, 40mm rounds. Each one costs about $25, and there were at least a dozen of them on the street where we were.
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