Police in Pittsburgh, Pennsylvania assaulted protesters with sound cannons during the latest G-20 meeting.* This was the first time that the weapons have been used against US civilians. According to Democracy Now, the weapon, known as a Long-Range Acoustic Device (LRAD) is manufactured by American Technology Corporation of San Diego. The device was used at 144 decibels which has as much sound pressure as an improvised explosive device. Quoting the Washington Times, Amy Goodman added:
“With the help of Homeland Security grants, police departments nationwide looking to subdue unruly crowds and political protesters are purchasing a high-tech device originally used by the military to repel battlefield insurgents and Somali pirates with piercing noise."
*Please see the 12-30-08 entry on US military preparation to use force against domestic resistance.