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The 31-year-old Brit superstar will make his hotly anticipated return to the squared circle on Saturday in London.
Joshua, who is of Nigerian heritage, showed his support to the anti-racism movements in June when he attended a march in his hometown of Watford.
However, 'AJ' has ruled out the idea that he would take the knee on Saturday, saying he is "trying to do more tangible things."
The two-time unified world champ said: "No, I won't take the knee.
"I'm trying to do more tangible things. What we're trying to do is create a union to support British culture, that's important to showcase people from the Afro-Caribbean community as valuable members of British society.
"I think that's more important, that's what we're working on at the minute with different athletes, different people, different places.
"Taking a knee is important, 100 per cent, but for me, personally, I'm doing something different this time around."
Joshua took to the scales on Friday for his pre-fight weigh-in before a heated exchange with Pulev on stage as the two heavyweights were separated by security.
'AJ' has confirmed that his camp has been working behind the scenes with charities, though he has hinted that more details would be revealed further down the line.
"I've employed someone with the team who is actually working on it," he explained.
"Hopefully, it comes to fruition and it's only really to do positive things in the great British environment.
"There's sometimes issues with stigma and stereotypes, so it's to showcase our NHS workers, architects, athletes and be positive for everyone in the community.
"We've created a deck, a website and we're doing foundational things with grassroots charities at the minute because I can talk to you about boxing but certain issues in the world, I'm not a full-time activist so I'm more than likely to slip up here and there.
"What I would like to do is to team up with charities who deal with these things day in and day out and support their causes and champion certain things."
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