“Every Child Is Born a Poet” profiles legendary “Nuyorican” bard Piri Thomas, the author of the groundbreaking 1967 autobiographical novel “Down These Mean Streets.” Poet, storyteller, teacher and proselytizer, Thomas is a whirlwind. To keep up, filmmaker Jonathan Robinson follows him frenetically, mixing re-creations (fanciful and realistic; in color and in black and white) with segments in which Thomas counsels kids and leads writing workshops for young offenders. His mantra: “I came from violence. Poetry was my way out. Poetry is wisdom.”