Washington, September 25 (RHC)-- This weekend, the professional sports world in the United States was rocked by widespread protests against racism, police brutality and President Donald Trump.

On Sunday, members of the majority of all National Football League teams took the knee or locked arms during the national anthem, or even sat out the anthem entirely. Professional baseball players, WNBA players, cheerleaders and national anthem singers also protested on Sunday.

The weekend of defiance came after Trump lashed out at players who have joined a growing protest movement started by former 49ers quarterback Colin Kaepernick against racial injustice. He said that team owners should fire players who disrespect the U.S. flag and the national anthem.

Over the weekend, Trump also took aim at the NBA, the National Basketball Association, rescinding an invitation to basketball champions the Golden State Warriors to visit the White House, after the team’s star player, Stephen Curry, said he would not attend. In response, NBA superstar LeBron James, one of the nation’s best-known athletes, tweeted: "You bum. Stephen Curry already said he ain’t going! So therefore ain’t no invite. Going to White House was a great honor until you showed up!"