MAY 21, 2014: Paramedics and police were trying to help Constantino Garcia when demonstrators threw bottles, bricks, rocks, and other heavy objects at them. Garcia was still clinging to life when a officer began giving him CPR. Protesters hurled a bottle that hit the officer in the head, injuring him. Paramedics then rushed the victim into an ambulance so they could continue giving CPR.

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A riot broke out and a homicide happened Wednesday night near where an emotional anti-police protest was staged on Del Monte Avenue in Salinas.Soon after the sun set Wednesday and darkness fell over the East Salinas neighborhood, one person who was standing near the protest was slain.Constantino Garcia, 23, of Salinas, was on the sidewalk outside his house on Mae Avenue and Del Monte Avenue when he was shot multiple times at 9:07 p.m., police said. Paramedics and police were trying to help Constantino Garcia when demonstrators threw bottles, bricks, rocks, and other heavy objects at them.VIDEO: Protesters clash with police in East SalinasConstantino Garcia was still clinging to life when a officer began giving him CPR. But a protester hurled a bottle that hit the officer in the head, injuring him. Paramedics then rushed the victim into an ambulance so they could continue giving CPR.Police released the following statement: "As officers arrived in the area to render aid to the victim and investigate the shooting, many people who had gathered in the area to protest started to throw bottles, sticks, rocks and bricks at the responding officers and the EMS personnel. While an officer was conducting CPR on the shooting victim, a bottle hit the officer in the head preventing him from rendering aid to the victim while on scene. The shooting victim was quickly taken away in an ambulance and to a local hospital where he died from his injuries. The shooting victim was a local resident of the neighborhood who was standing on the sidewalk in front of his home. Constantino Garcia had recently moved to Salinas with his wife and child."Detectives said at least 100 people witnessed the homicide, however, "at this time, no witnesses have come forward to assist with the investigation."Witnesses refused to help police identity who the gunman was, and no suspects were arrested in connection to the victim's death.East Salinas residents had been protesting all day on Del Monte Avenue where Salinas police shot a man Tuesday. A witness recorded the man's death on video and uploaded it on YouTube.VIDEO: Frame by frame analysisAfter the riot broke out Wednesday night, 911 dispatchers told law enforcement officers across Monterey and Santa Cruz counties to respond for mutual aid. Emergency lights and sirens were seen and heard racing through Moss Landing on Highway 1 toward Salinas. Salinas police officers wearing riot gear told the crowd to back up because they were establishing a radius around the homicide scene. The crowd did not move back until the mutual aide officers arrived from the Monterey County Sheriff, Watsonville, Santa Cruz, and the Monterey Peninsula.At 11 p.m., police arrested 26-year-old Diego Ruiz on charges of inciting a riot and resisting arrest."Diego was in a crowd of demonstrators near the shooting scene at Del Monte Avenue and Mae Avenue. He taunted officers, antagonized a police K9, and moved through the crowd gathering followers. He was seen looking back into the crowd several times and encouraging others to join him. (He) eventually approached a group of officers and began challenging them while taking a fighting stance," officer James Godwin said.A Seaside police officer who had responded to the call for mutual aide took Ruiz into custody and booked him into the Monterey County Jail.Demonstrators declared officers used racist judgment and unnecessary force while killing three Hispanic men in three separate incidents in 2014.March 20: Angel Ruiz was armed with an Air soft pellet gun outside a restaurant on Constitution Boulevard when he was fatally shot by police.May 9: Osman Hernandez, 26, was armed with a lettuce knife when police shot him in the head outside Mi Pueblo in a busy shopping center on East Alisal Street. Hernandez was clutching a lettuce knife and ignoring police commands when he was shot, according to the police chief.May 20: An unnamed man armed with gardening shears was followed by police down North Sanborn Road before he was shot dead in front of several witnesses, including one witness who was recording with a camera. Police said he had threatened to kill a woman and tried to break into her home.A petition was created Wednesday on Change.org called Justice Salinas. By 5:40 p.m, more than 2,000 people had signed the petition.PHOTOS: 3 officer-involved shootings in Salinas"We completely understand that there is genuine concern and questions that need to be answered. We want to be able to come forth with all the facts,” police Cmdr. Vince Maiorana said. "It's a horrible situation when you have lost of life. We take investigations seriously no matter who is involved, so I just hope people don't rush to judgment." Anyone with information on Wednesday night's homicide is urged to call Detective Zuniga or Detective Gonzalez of the Salinas Police Department Investigations Bureau at 831-758-7929 or 831-758-7127.