Emails to a former friend and Yale Law classmate of J.D. Vance reveals the fledgling vice Republican presidential nominee was open about hating the police and called Donald Trump’s supporters racists before he seemingly transformed into a MAGA devotee overnight. Sofia Nelson, who identifies as transgender, gave an exclusive interview with CNN’s Erin Burnett Monday, detailing Vance’s radical transformation from the person she knew. “What I’ve seen is a chameleon. Someone who is able to change their position and their values depending on what will amass them political value and wealth and I thin…