Mitchell made his mark back on the field on Sunday, scoring a try double as his Sydney Roosters trounced the Warriors 42-6 at the SCG.

But it's been off the field where Mitchell had the biggest impact in the past week.

His decision to screenshot and share vile social media abuse against him became one of the most high-profile anti-racism stands in Australian sport since AFL superstar Goodes stood up to booing crowds in 2015.

"Adam reached out the other day and that was awesome," Mitchell said.

"He just gave me a message and said 'I love what you're doing' for standing up for myself as well.

"He said it was pretty much similar to what he went through in his career.

"I take my hat off to him - getting booed every game is nothing you want to be going through as a footy player. It's only a game.

"I'm very emotional when it comes to these things because we don't need to run out and be booed.

"We go out and do what we love to entertain people."

Mitchell revealed he'd also spoken to Swans star Lance Franklin, and thanked NRL boss Todd Greenberg for his support.

The Kangaroos centre confirmed it was not the first time he'd been targeted.

But he said from here on, he would continue to call out racist online behaviour in a bid to assist societal change.

"I'll name and shame whoever does it, I don't care," Mitchell said.

"I want it to start there. I look in my backyard and I know where I want to be.

"But I need people to start looking in theirs and making sure what they teach their kids. It's going to take another generation before this is even thought about again.

"One person says it, 10 people think it, and that's where I want to stop that.

"I'm not going to stand back and take it on the chin. Everything that is said about Aboriginal people really affects me.

"It's a coward act (the racist social media post), it's hiding behind a phone."

Roosters coach Trent Robinson reaffirmed his support for Mitchell's stance.

The 22-year-old was arguably the Roosters' best player on Sunday, scoring two tries and throwing the last pass for another.

"I've been very impressed with him," Robinson said.

"It's a pretty important lesson in life. I thought he did really well in dealing with it.

"Making a call and then being really positive about the way he was going to play.

"And it's not this week and it's finished - it's his whole life."

Australian Associated Press