Stephen Powell was 20 when he was shot multiple times and killed on April 17, 2010, during Pink Saturday celebrations in San Francisco’s Castro district. The shooting at the intersection of Market and Castro streets also wounded two bystanders amid hundreds of partygoers. Limited witness cooperation early on and crowded conditions hindered the investigation.

A suspect, Ed Perkins, was arrested soon after but investigators determined the handgun found on him was not the murder weapon and witnesses did not place him at the scene; he was later charged with carrying a concealed weapon and possessing a loaded firearm but not with murder. Authorities and community groups have urged anyone who attended Pink Saturday and has photos or video from the Market and Castro area to come forward, believing critical evidence may still exist among attendees’ recordings.

If anyone was at Pink Saturday that night or has footage from near Market and Castro, please share what you have with investigators.