Los Angeles operates the largest jail system on Earth. At a cost of nearly $1 billion annually, more than 17,000 people are caged every night in county jails and city lockups. But not every neighborhood is equally impacted by L.A.’s massive jail system. In fact, L.A.’s nearly billion-dollar jail budget is largely committed to incarcerating many people from just a few neighborhoods. In some communities, local authorities are spending more than one-million dollars annually to lock up residents.