Familiar scenes played out across the island last week as Sri Lanka marked 77 years since the end of British rule. In the Sinhala south, lion flags were hoisted with pride and Colombo’s streets saw yet another military parade. But in the Tamil North-East, a starkly different picture was evident once more. Black flags were raised, protests were held, and the enduring sense of alienation that Tamils have long felt on this so-called "Independence Day" was once again laid bare.