Reporter Trisha Thadani talks about the city's new Street Crisis Response Team — mental health professionals, not cops — which responds to the city's most vulnerable people, including those who are mentally ill, addicted to drugs and unhoused. The team is part of a the nationwide movement to get police out of situations where they might not be needed. But big challenges remain, including providing enough shelter and care and making sure people don't simply cycle back to the streets. | Unlimited Chronicle access: sfchronicle.com/pod

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