Hundreds of supporters of the Cockroach Janata Party, an online joke that drew millions across India, gathered for the first time in the national capital on Saturday, taking the social media movement off screens and into its biggest real-world test yet. The protest at Jantar Mantar in New Delhi, marks the movement’s first foray into street politics after weeks of dominating social media feeds and news headlines, attracting millions of online followers and widespread support among young Indians.