DES MOINES, Iowa — Joe Biden spoke of his connection to black voters at an NAACP event Sunday afternoon and claimed his “political identity” was molded by minorities in his home state of Delaware. “I have a lot of black support because that’s where I come from. I was raised in the black church, politically, not a joke,” the former vice president said in Des Moines. “When I got into politics, I was the only white guy working on the east side, in the projects, because these were the guys I grew up with. These were the guys I worked...