Chirlane ​McCray wants to train New Yorkers in what’s called “mental-health first aid.”​ Chirlane McCray is one of those public figures whose life stories seem almost designed to fascinate us. She is a poet, a social-justice advocate, a founding member of the iconic black feminist group the Combahee River Collective, and once identified as a radical lesbian, writing fearlessly about homosexuality in Essence magazine at a time when many mainstream publications, black and white