Jaylen Brown said he wasn't sure if owners would fully back players in supporting their social justice movement.
"I'm not sure. I can't speak for everybody. I can only speak for myself, and I am not sure. I'm not as confident as I would like to be, I'll say that," said Brown.
Brown added that he's skeptical of small, incremental changes, as the same issues continue to persist in 2020.
"Everybody keeps saying, 'Change is going to take this, change is going to take that.' That's the incrementalism idea that keeps stringing you along to make you feel like something's going to happen, something's going to happen. People were dying in 2014, and it's 2020 and people are still dying the same way. They keep saying 'reform, reform, reform,' and ain't nothing being reformed. I'm not as confident as I would like to be."
Brown previously lead a protest in his native Atlanta while the season was suspended.
Brown said that NBA arenas becoming voting centers was a start of a process, though he wanted to see all 29 arenas involved.
"Voting shouldn't be this hard. It shouldn't be this much of a disconnect between. It should be something easy. And yet, there [are] less and less voting polls in certain communities, less and less workers in certain communities. And it makes it extremely difficult. It's difficult, it already is already. It makes it even more difficult to get outside and vote. So, I would like to see every NBA team that regardless of what was agreed upon ... open [their arena], and I would like to see more players and athletes, people of influence, bring it to their cities to kind of combat that."