CNN is being accused of inadequately covering former Vice President Joe Biden’s comment Friday that black people who have questions about supporting him "ain’t black.” “I tell you if you have a problem figuring out whether you’re for me or Trump, then you ain’t black,” Biden said during an interview with Charlamagne tha God on Friday . . . "Fascinating to watch how the left-leaning cable networks have covered Biden’s 'you ain’t black' comment. MSNBC has discussed it nearly every hour [...] CNN hasn’t mentioned it once," former CNN digital producer Steve Krakauer said. . . . "It’s been over...