In a city built on the slave trade, Britain’s oldest black community seeks a reckoning

Liverpool is "probably the greatest memorial to Britsh involvement in slaving." More than 1.3 million salves were moved on Liverpool-built ships. But, although it is home to what is considered to be Britain's oldest black community, many still argue that the city has considerably failed to confront its problematic past. The Black Lives Matter protests have now sparked another chapter in that debate. Max Colchester investigates.