It started at the Tribeca Film Festival screening of "Love True," directed by Alma Har'el, a fantastical documentary about the brutal sadness of love. Walking out of the cinema with Gillian, out of the sky came teenage boys tumbling across the sidewalk. One appeared under assault. Our breath quickened, Gillian and me, as we tried to make sense of our seeing. Their faces told one hundred stories. I pulled my Leica M60 from inside a coat pocket like taking a gun outta my holster. That's down and dirty street photography; seeing shooting no questions asked.