Harris' attack on Joe Biden steals spotlight at Democratic primary debate

Democratic voters tuned into Thursday night's debate searching for the candidate who could take down Donald Trump in the 2020 presidential election -- and many flipped on their television sets expecting that person to be front-runner Joe Biden.

In a surprise twist, it was former prosecutor Kamala Harris who took command of the debate stage, outshining her rivals time after time with succinct and fiery denunciations of the Trump administration's policies on everything from the treatment of migrant children to the gaping income equality in this country—and even setting the...