By Jessica Portner
On one bright summer evening, a counselor, Nathaniel San, is talking to a group of teens and preteens packed around two tables in Martin Luther King, Jr. Park in Central Long Beach. His summertime lessons in the high-crime neighborhood aren’t about the mechanics of math or the intricacies of biology. They are about managing anger by converting negatives into positives, thinking before doing, and knowing the consequences of one’s actions.