Former U.S. President Barack Obama puts on his face mask after his speech as he campaigns on behalf of Democratic presidential nominee and his former Vice President Joe Biden in Philadelphia, Pennsylvania, U.S., October 21, 2020.
Former U.S. President Barack Obama puts on his face mask after his speech as he campaigns on behalf of Democratic presidential nominee and his former Vice President Joe Biden in Philadelphia, Pennsylvania, U.S., October 21, 2020.