There is a brilliant little detailed article written by Asher Smith at Cultural Affairs titled JOE BIDEN’S RECORD ON RACIAL INTEGRATION IS INDEFENSIBLE that was published in April of 2018. It goes into detail about Biden’s record of voting for/against Segregation legislation as well as his tight relationship with Senator Jesse Helms who was dubbed “the last prominent unabashed white racist politician in this country” by the Washington Post.
The article is worth the read.