Protesters briefly interrupt Houston Democratic debate

Beneficiaries of the Deferred Action for Childhood Arrivals (DACA) program briefly interrupted former Vice President Joe BidenJoe BidenTucker Carlson ratchets up criticism of Duckworth, calls her a 'coward' Joe Biden wins New Jersey primary Biden wins Delaware primary MORE’s answer to the final question at Thursday night's Democratic presidential debate.

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Biden began to answer a question from moderator George StephanopoulosGeorge Robert StephanopoulosPelosi: Nationwide mask mandate 'definitely long overdue' ABC News to air Bolton interview shortly before White House memoir release GOP senator says it's time to stop naming military bases after Confederate generals MORE about his most significant professional setback when protesters began shouting “We are DACA recipients. Our lives are at risk,” according to Jess Davidson, executive director of the group End Rape on Campus, who was present at the debate.

Participants in the protest were photographed in shirts reading “DEFEND DACA, ABOLISH ICE, CITIZENSHIP FOR ALL.”

Biden waited until the protesters were escorted out before continuing his answer, quoting the philosopher Soren Kierkegaard as he discussed the death of his wife and daughter in a car crash.

The former vice president had earlier mentioned the DACA program, which President TrumpDonald John TrumpNew Jersey incumbents steamroll progressive challengers in primaries Tucker Carlson ratchets up criticism of Duckworth, calls her a 'coward' Trump on Confederate flag: 'It's freedom of speech' MORE rescinded in 2017, in an answer drawing a distinction between the Obama and Trump administrations' immigration policies.