Mayor Pete Buttigieg’s presidential campaign announced Friday that the co-host of a controversial campaign fundraiser was dropping out amid sharp public criticism over the role he played in delaying the release of a video of an infamous 2014 shooting death of a black teenage boy.

The would-be co-host, Steve Patton, is a former Chicago city attorney who pushed to withhold video depicting the death of 17-year-old Laquan McDonald until after a contentious mayoral runoff election, more than a year after a judge had ordered the video to be released. Patton already donated $5,600 to Buttigieg in June—a donation that the South Bend mayor’s campaign said it would be returning.

“Transparency and justice for Laquan McDonald is more important than a campaign contribution,” Chris Meagher, the Buttigieg campaign’s national press secretary, told The Daily Beast. “We are returning the money he contributed to the campaign and the money he has collected. He is no longer a co-host for the event and will not be attending.”

Patton’s role in the Friday fundraiser, first reported by the Associated Press, prompted sharp criticism of Buttigieg, including from the Rev. Jesse Jackson, the city’s most prominent civil rights leader, who called on the Democratic nominee to “adjust his schedule.”

Buttigieg’s campaign had initially declined to comment on the story, directing the Associated Press to his “Douglass Plan” to end systemic racism.

Buttigieg, who is struggling in the polls among black voters, has had difficulty trying to reconcile his sweeping proposals for deconstructing structural racism with his record as the mayor, where he fired the city’s first black police chief and has conceded that he has failed in diversifying the city’s law enforcement. South Bend’s police department is 90 percent white while the city itself is 27 percent black.

In June, Buttigieg left the campaign trail following the shooting death of a black man, Eric Logan, by a white police officer. At a town hall discussing the shooting, Buttigieg was heckled by angry South Bend residents who demanded that he focus on the city’s problems with racism in its police force rather than his run for the White House.

“I just want you to know that we’re not running from this,” Buttigieg said at the time. “Of course I’m upset. A man died in this city at the hands of one of the people in charge of protecting the city.”

Other president campaigns were quick to jump on Patton’s participation in the fundraiser as evidence of misplaced priorities. Rob Flaherty, digital director for Buttigieg rival Beto O’Rourke, tweeted that it was “good to see that despite The Pete Pivot, he’s remaining consistent on some things.”

According to Federal Election Commission filings, Patton donated $2,700 to O’Rourke’s 2018 campaign for the U.S. Senate.