Salesforce CEO Marc Benioff got into a Twitter beef with another exec over a controversial measure tackling San Francisco's homelessness crisis (CRM)
Marc Benioff
Marc Benioff

Kimberly White/Getty Images for Fortun

  • Proposition C is a ballot measure in San Francisco, California that would tax the city's largest corporations to provide more funding to homeless services. 

  • On Saturday, the gloves came off over Twitter between Zynga chairman and co-founder Mark Pincus and Salesforce CEO Marc Benioff. 

  • Pincus tweeted: "Prop c is the dumbest, least thought out prop ever."

  • Benioff countered by asking: "Mark what’s your plan & what’s your contribution to helping our homeless?" 

As election day approaches, the gloves are coming off for some Silicon Valley execs over the controversial Proposition C, a ballot measure in San Francisco that would tax the city's largest corporations to provide relief in the city's ongoing homelessness crisis

The latest bout came Saturday between Zynga chairman and co-founder Mark Pincus and Salesforce CEO Marc Benioff — the latter of whom had previously taken Twitter CEO Jack Dorsey to task for his opposition to Prop C.

Over the past two months, Benioff has become the undisputed top evangelist in support of Prop C, with him and his company donating a combined $7.9 million to the cause. That's put him at odds with figures including San Francisco Mayor London Breed, who vocally opposes Proposition C, though prominent politicians including Nancy Pelosi and Diane Feinstein agree with him.

Pincus, who according to public records has not donated to either side of the measure, tweeted on Saturday, calling Prop C, "the dumbest, least thought out prop ever." He questioned how much taxes would increase for Salesforce and Zynga should the proposition pass muster with voters, and said the proposed measure "doesnt connect the problem to the money in a logical way." 

Benioff said the homelessness issue in San Francisco was urgent and that,"we can not wait any longer for a 'better' or 'more fair' plan."

Here's how the conversation went down. 

Pincus' tweet set things off. 

Tweet Embed:
//twitter.com/mims/statuses/1058840643340922880?ref_src=twsrc%5Etfw
Prop c is the dumbest, least thought out prop ever. Please get the facts and vote no. Then lets all focus on real solutions for sf.

Later that night, Benioff responded, setting off a short social media donnybrook.

Tweet Embed:
//twitter.com/mims/statuses/1058945832022491136?ref_src=twsrc%5Etfw
Mark what’s your plan & what’s your contribution to helping our homeless? Tell us in detail what @zynga is doing for them now at scale & what your plan is? The homeless have been left behind by You & the other 70 SF billionaires. Yes on C. Big business like mine pay, you don’t.