On April 14, Vitalik Buterin wrote an article today saying that he supports privacy not only because it is a guarantee of personal freedom, but also the cornerstone of social order and technological progress. The article points out that decentralization is inseparable from privacy, and current AI and big data have greatly enhanced the centralized control of risk control over personal information. Vitalik stressed that cryptographic technologies such as ZK-SNARKs are empowering to protect identity information and achieve secure data calculations. He called for enhanced open source, universality and credibility of digital privacy tools to combat potential global data hegemony.