Sergey Brin and 11 other billionaires and tech elite lined up against California's proposed billionaire tax

Source: Business Insider

Google cofounder Sergey Brin and John Doerr have donated a combined $94 million to undercut California's proposed billionaire tax. Peter Thiel has donated $3 million to a separate group. Getty ImagesA handful of California's estimated 214 billionaires are trying to stop a proposed wealth tax.