LOS ANGELES, June 09. /ITAR-TASS/. An unidentified man and woman opened fire on the street in Las Vegas (USA) on Sunday. The shooting ended in the death of two police officers and bystander. According to the media reports, the shooters yelled "This is a revolution" while firing on the officers. In a few minutes the woman shot her accomplice and committed suicide. "What precipitated this event we do not know,” Sheriff Douglas Gillespie said . “My officers were simply having lunch,” he added.