Not quote tweeting to drag but to not get lost in the replies:
Matt Y said he gave "a sharper meaning to the concept of "unity" that he's been invoking across two years of campaigning" but the passage given as an example is a remix of his stump speech. https://twitter.com/mattyglesias/status/1351953578940764163

It differs from the out-of-context media soundbite view of Biden, esp. from the completely false projected image that he claimed he was for a return to the pre-Trump status quo.

See his Jan 16, 2020 speech to the National Baptist Convention: https://www.facebook.com/watch/?v=2001183800027161

“It’s literally a constant battle for the soul of this nation. It’s been a constant push and pull for more than 240 years between the American ideal that we’re all created equal and the harsh reality of racism [that has] long torn us apart. … It’s always a fight.”