Barbados has officially removed the Queen as its head of state and become the world's newest republic. Prince Charles and Barbadian singer Rihanna attended the event, Prince Charles acknowledged the "appalling atrocity of slavery" the Caribbean island suffered. The new era for Barbados ends Britain's centuries of influence, including more than 200 years when the island was a hub for the transatlantic slave trade. Ireland became a republic in 1948, why is it many countries still want the Queen as their head of state? At the handover Rihanna was made a national hero, who would be our national hero? Henry McKean went to ask.