On 24 May 1948, the MV Empire Windrush docked at Tilbury carrying hundreds of passengers from the Caribbean looking for a new life in the ‘mother country’. On the same day, 11 Labour MPs led by JD Murray wrote to Prime Minister Clement Attlee complaining bitterly about the ‘discord and unhappiness’ this wave of Caribbean immigrants would cause to Britain. It’s time an apology was made, says R David Muir.