Protest guard fired at armed man he mistakenly believed to be threat to protesters but accidentally killed a bystander
A safety volunteer accused of fatally shooting a man taking part in a June No Kings protest in Salt Lake City, while firing at another armed man he believed to be a threat, was charged with manslaughter on Wednesday.
Matthew Scott Alder, 43, was charged with one count of manslaughter. Alder opened fire during the protest on 14 June after seeing another man, Arturo Gamboa, carrying a rifle. Alder told investigators that he believed Gamboa, 24, was about to commit a mass shooting, so he fired three shots, wounding Gamboa but killing a bystander, Arthur “Afa” Ah Loo. Ah Loo was recording video of protesters in the street when he was fatally shot.
“While you may have a right to use lethal force, that doesn’t mean that lethal force can be used in a reckless manner,” the Salt Lake county district attorney, Sim Gill, told reporters on Wednesday in a lengthy description of the process that led to the criminal charge.
Alder was not initially arrested on the day of the protest. However, police did arrest Gamboa and kept him in jail for a week, though he was not charged with any crime. Gamboa’s attorney said that his client’s weapon was not loaded and pointing down when he was shot.
The district attorney confirmed that no charges would be filed against Gamboa, citing Utah state law, which allows individuals to carry guns in public spaces.
Although he was mistaken for an attacker by the safety volunteer, Gamboa had previously attended many public protests, bringing his AR-15 style rifle to at least a dozen events over the years, including the 2020 protests against police violence, according to a Salt Lake Tribune report. Gamboa’s friend and former roommate told the Tribune that Gamboa carried the gun not only for his own protection, but for the protection of other protesters in case counter-protesters showed up.
Ah Loo’s widow, Laura Ah Loo, said in a news conference that the district attorney’s decision to file a criminal charge against Alder represents “a significant first step in the right direction [to] establish a precedent that I hope will lead to a safer environment of public gatherings in the future”.
If convicted, Alder faces up to 15 years in prison and a $10,000 fine.
