How a bookstore owner turned a tech billionaire into a homelessness activist

Christin Evans' Twitter conversation with Salesforce's Marc Benioff led to his role as a key advocate for San Francisco's Prop C

It was a late-night Twitter argument that Christin Evans never planned to have. The San Francisco bookstore owner and homeless advocate used the platform to voice her frustration over a comment from the Salesforce CEO, Marc Benioff - but she never thought he'd reply.

"Is this for real?!" she wrote above a retweeted comment attributed to Benioff referring to San Francisco as the "Four Seasons of homelessness". Tagging him in the tweet, she added: "How out of touch can a billionaire be?!?!" along with a plug to support Proposition C - a city initiative going to voters in November that would tax San Francisco's highest-earning companies to fund new strategies to combat homelessness.