Jason Stockley, the former Missouri police officer who shot and killed Anthony Lamar Smith in 2011, on Friday became the latest cop to be acquitted of murder in spite of video that captured Stockley saying he would kill Smith before shooting him at close range multiple times.

The acquittal was expected to trigger protests in St. Louis, just a few miles from Ferguson, Missouri, where Michael Brown was shot and killed by police in 2014.

While video evidence from body cameras, dash cameras, surveillance cameras, and mobile phones has increased the frequency with which cops are charged with murder and manslaughter since 2015, it is not leading to more convictions. VICE News’ Isabella McKinley Corbo reports: