Johannes Mehserle is a former police officer who gained national attention in the United States for his involvement in the shooting of Oscar Grant, an unarmed Black man, on January 1, 2009, in Oakland, California. Mehserle was working for the BART Police Department at the time of the incident, which was captured on video and sparked widespread protests and discussions about police use of force. In 2010, Mehserle was charged with murder and later convicted of involuntary manslaughter. He was sentenced to two years in prison, serving a portion of that time before being released. The case highlighted issues of police accountability and racial tensions in America.