My TED Talk is LIVE. In 7 years as a political prisoner in Venezuela, I kept asking: who holds the keys to freedom? Now I have an answer. Open-source, decentralized technology can put power in the hands of ordinary people. Watch: 
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How to use tech to outsmart dictators
In seven years as a political prisoner in Venezuela, activist Leopoldo López kept asking one question: Who holds the keys to freedom? Now the lead...