Today, India marks 120 years since Chandrashekhar Azad was born, and more than nine decades after his death, his name still carries the same electric charge it did in 1931. He never held office. He never wrote a manifesto that survives in full. He never even let the British take a photograph of him while he was alive. And yet, "Azad" became shorthand in this country for one very specific idea: that some people simply cannot be caged.