Watch: Protester berates Joe Biden on the streets of Detroit, demands he apologize for deportations under Obama

Democratic presidential front-runner Joe Biden got an earful Thursday in Detroit, when an immigration protester ran into the street and screamed at him while the vehicle he was riding in was stopped at a light.

The determined activist repeatedly berated the former vice president for the deportation of 3 million illegal immigrants during the Obama administration and demanded an apology.

What are the details?

Video of the incident was released by CBS News political correspondent Ed O'Keefe, who posted the footage on Twitter with the message: "BIDEN CONFRONTED on the streets of Detroit. As he left his campaign event, an immigration protester jumped into traffic, shouting 'Three million deportations! Three million deportations!' She asked him through a tinted window to apologize. He did not appear to respond."

The protester tells Biden, "We don't need your big answers. We need better candidates! Where is your apology? Where is your apology?"

This could be a developing pattern on the campaign trail for Biden, who was confronted by a crowd of immigration protesters a few weeks ago over the same issue.

Anything else?

The former vice president is facing scrutiny from far-left progressives, many of whom support open borders as liberals counter President Donald Trump's crackdown on illegal immigration.

Some of Biden's fellow 2020 Democratic contenders have even criticized the Obama administration for utilizing the same practices continued by the Trump administration, as candidates fight for support from liberal factions.

The New York Times reported that during the second presidential primary debate on Wednesday night, Biden was attacked by New York Mayor Bill de Blasio, former Obama HUD Secretary Julian Castro, and Sen. Cory Booker (N.J.) for not doing more to stop deportations while serving as vice president.