US President Joe Biden announces 2024 re-election bid

United States President Joe Biden has announced his re-election bid for 2024.
In a video launching his campaign to retain the White House, he cast the next election as a fight for democracy and personal freedom.
At 80, Biden is already the oldest president in US history, but he has brushed aside concerns about his fitness to serve a second term.

Al Jazeera's Alan Fisher has more from Washington, DC