https://news.sky.com/story/the-million-dollar-streets-strewn-with-bodies-contorted-by-the-effects-of-fentanyl-12871961Bodies are strewn on the doorstep of San Francisco's main government building, contorted by the effects of fentanyl, a painkiller 100 times more potent than morphine.
We're two streets away from the headquarters of Twitter, in a city district with more billionaires than anywhere on Earth, but this has become an open-air drug market.
Trevor Pearson has been addicted to opiates for 10 years, first heroin and now fentanyl. He wants everyone to know of the devastation.
"The fact that this isn't a main issue, on TV every night, is insane to us," he says.
"I've never seen anything like it. There are regular people, square Joes on their way to work and they'll stop and hang out with me, try this drug for the first time, and then leave their life literally from that moment on, they're just out here with us."