 If a cryptocurrency like Bitcoin were to become a commonly accepted medium of exchange, a global decentralized monetary system that no third party can stop or control, would the US government attempt to make it illegal and to prosecute the developers who contribute to its code base is software protected by the First Amendment? Tornado Cash is a tool, and tools are neutral, just like Bitcoin, encryption, guns, even telephones. Investors and dictators can use them, as can human rights activists and dissidents. The government should target the criminals and authoritarians who threaten human freedom, not the programmers and cryptographers who build new technologies that can better secure human freedom.