Miami Dolphins wide receiver Kenny Stills openly criticized his boss, team owner Stephen Ross, over the news that Ross would be hosting a fundraiser for President Donald Trump in the Hamptons.

Stills, who led Miami with six receiving touchdowns last season and is one of the team’s top targets, posted a message to his Twitter account Wednesday morning that said: “You can’t have a non profit with this mission statement then open your doors to Trump.”

The tweet then contained a screenshot of the mission statement of the Ross Initiative in Sports for Equality (RISE), an organization launched by Ross.

“We are a national nonprofit that educates and empowers the sports community to eliminate racial discrimination, champion social justice and improve race relations,” the mission statement reads.

“Through partnerships and programs, we inspire leaders in sports to create positive change on matters of race and equality.”

You can’t have a non profit with this mission statement then open your doors to Trump. https://t.co/sNBWfEXvLn pic.twitter.com/nNkRf2wJep — Kenny Stills (@KSTiLLS) August 7, 2019

Stills’ tweet was in response to one from an ABC7 news reporter, who had linked to a Washington Post story about a series of fundraisers Trump is undertaking to generate campaign contributions before the 2020 presidential election. According to The Post, the price of entry to the various fundraisers ranges from $5,600 to $250,000.

Stills has been one of the most vocal players in the entire NFL in recent years while promoting various social causes. He has used his platform to raise awareness about police brutality and has helped launch various pushes to reform police enforcement in South Florida as well as criminal justice reform.

He has continued to protest social inequality by kneeling during the pre-game playing of the national anthem, or in some cases remaining in the tunnel, before coming out onto the field.

Stills, 27, is set to enter his fifth season with the Dolphins and caught 37 passes for 553 yards and six touchdowns in 15 games last season.

Read more at usatoday.com.