The day after Tuesday’s clamorous presidential debate, President Donald Trump said he wasn’t familiar with the Proud Boys, a nationalist hate group that’s espoused white supremacist views and committed acts of violence.

“I don’t know who the Proud Boys are,” Trump said on Wednesday. “You have to give me the definition because I don't really know who they are. I can only say they have to stand down, let law enforcement do their work.”

Trump received widespread criticism from members of Congress – including GOP lawmakers – for not strongly condemning white supremacist groups and telling the Proud Boys to “stand down and stand by” on the debate stage Tuesday.

On Wednesday, former vice president and Democratic presidential candidate Joe Biden said Trump’s words were already embraced by the hate group, which the Anti-Defamation League has likened to a gang.

“Go online, look at proud boys, they’ve got a new emblem now,” Biden said. “It says ‘stand down and stand by,’ implying that if he loses the election, something may have to be done.”

Joining us to discuss white supremacy and hate groups in America are David Goldenberg, the Midwest regional director of the Anti-Defamation League, and WBEZ reporter Odette Yousef, host of the podcast “Motive,” which delves into youth participation in white supremacist hate groups for its third season.