Fans of Christina Grimmie have criticised the Teen Choice Awards for not mentioning or paying tribute to the late singer, despite her winning her first award.
The 22-year-old was shot dead in front of terrified fans as she signed autographs after a show in Orlando, Florida, in June.
The late YouTube star and former contestant on The Voice was posthumously named Choice Web Star: Music at Sunday night's ceremony, but the trophy was not handed out on air.
Fans were angry that Grimmie, as she was known, was not referenced at all during the show, even though the show dedicated a special segment to the victims of gun violence.
Jessica Alba stood with families of victims of the violence on stage before Ne-Yo performed Marvin Gaye's What's Going On. They called on the audience to flood social media with the hashtag #StopTheViolence.
A post on Grimmie's official Twitter account by Brian Teefy, who discovered her on YouTube, had encouraged fans to vote for her in the Teen Choice Award category.
After the show, angry fans slammed organisers FOX for "exploiting" her death to gain viewers and then failing to pay tribute to her.
Over 21,000 people "liked" fellow YouTube star Shane Dawson, who angrily said he was glad there was no tribute from the "trash show".
A change.org petition has now been set up to demand a formal apology from Teen Choice and FOX.
FOX did not immediately respond to requests for comment.