Emmitt Martin is one of five fired officers charged over the fatal beating in 2023 that renewed calls for police reform.
Daniel Perry was jailed for 25 years for shooting dead protester Garrett Foster in Austin in 2020.
Experts fear law enforcement is using Marsy’s Law to hide names and dodge accountability in cases of police violence.
Randy Roedema handed 14-month sentence for 2019 killing of McClain, who was put in a chokehold, injected with ketamine.