Sia Kailahi is a tough-looking amateur boxer with dark eyeliner and tattoo-covered arms, but today her boxing gloves are off. She tosses up a volleyball and smacks a serve over a net.
A dozen people, laughing, keep the ball airborne at Bell Street Park in East Palo Alto, Calif. The park sits right next to a freeway exit in a city that has significant crime, despite being surrounded by affluent communities and technology companies. This park has a history as an easy stop-off point for buying and selling drugs.