Biden vows to defeat Trump, end US ‘season of darkness’

Democratic presidential candidate former Vice President Joe Biden, with Democratic vice presidential candidate Sen. Kamala Harris, D-Calif., raise their arms up as fireworks go off in the background during the fourth day of the Democratic National Convention, Thursday. (AP Photo/Andrew Harnik)

WILMINGTON, Del. — Joe Biden accepted the Democratic presidential nomination Thursday night with a vow to be a unifying “ally of the light” who would move an America in crisis past the chaos of President Donald Trump’s tenure.