Since 1973, at least 186 people in the US have been exonerated after being sentenced to death. How many innocent people have actually been killed by the authorities?
Joe Biden takes office as the 46th president of the United States with an optimistic call for unity, vowing to bridge deep divides and defeat domestic extremism two weeks after a violent mob tried to undo his election victory.
On a frigid but sunny day at the very Capitol building that was assaulted on January 6, Biden was sworn in moments after Kamala Harris became America's first woman vice president, closing the book on Donald Trump's tumultuous four years.
"Democracy is precious, democracy is fragile and at this hour, my friends, democracy has prevailed," Biden says before a National Mall that was virtually empty due to the ultra-tight security and a raging COVID-19 pandemic that he vowed to confront immediately. — AFP