Democratic presidential candidates took aim at 2020 rival Joe Biden over legalization of marijuana and long-festering issues of race in American society during Wednesday’s primary debate in Atlanta.

“This week I heard him literally say I don’t think we should legalize marijuana. I thought you might have been high when you said it,” said New Jersey Sen. Cory Booker. “With more African Americans under criminal supervision in America than all the slaves since 1850, do not roll up into communities and not talk directly to issues that are going to relate to the liberation of children.”