The Chan Zuckerberg Initiative is doubling down on Prop 15

CZI announced it was donating another $4.5 million to Yes on California's Proposition 15, bringing its total contributions to $10.8 million.

The measure, which would close a decades-old tax loophole on businesses' property taxes, is seen as one way for the tech industry to address inequality, but Mark Zuckerberg is one of the only tech billionaires to support it.

"The Chan Zuckerberg Initiative has consistently viewed policy change as a critical lever in moving the needle on our core issues areas of housing affordability, criminal justice reform and immigration reform," the organization said.

CZI announced new funding concerning other ballot measures too, announcing new contributions to:

• No on Proposition 20, which critics say would roll back criminal justice reforms.
• Yes on Proposition 16, which would bring back affirmative action.
• No on Measure Y in San Mateo County, with CZI saying it "stands behind the necessity to end exclusionary zoning."
• Yes on Measure W in Alameda County, which CZI says "addresses the county's homelessness crisis."
• Yes on Measure 110 in Oregon, which would effectively decriminalize non-commercial drug possession.