John Robb, JOURNAL: Protest as National Security Threat

I first heard about the National Guard/police using a sonic weapon on protesters on Coast to Coast AM. There was speculation that the so-called anarchists were undercover police provocateurs, as it followed their standard m.o. and it had been "proven" in the past that the police had planned to take action against protesters through their use.

Military uses Sonic Weapon and Tear Gas on Protestors at g20 Pittsburgh