Three Muslim men who were transporting buffaloes were brutally beaten in the heart of Delhi this week. A month ago, in Rajasthan, Pehlu Khan lost his life in in a similar attack. His family, still in mourning, awaits justice while Mohammad Akhlaq of Dadri has virtually been forgotten. In India Matters, we bring you the anatomy of communal violence carried out in the name of cow protectionism and the state's collusion in it.