Bitcoin has won over some of America's best-known billionaires, and institutions worldwide are treating it as a serious financial asset. But bitcoin's rising price is only one part of the story.

Whether they know it or not, people who buy bitcoin are strengthening a tool for protecting human rights. This still relatively new form of electronic money is censorship-resistant, seizure-resistant, borderless, permissionless, pseudonymous, programmable, and peer-to-peer.