WESTERN BUREAU:A call has been made for Jamaicans at home and abroad to unite as a global community, speak out against injustices taking place internationally, and help strengthen their homeland.Reverend Rose Hudson-Wilkin, the suffragan bishop of Dover and Bishop in Canterbury of the Church of England, made the appeal while delivering the keynote sermon during a service held yesterday at Calvary Baptist Church in Montego Bay, St James, marking the start of this week's 11th Biennial Jamaica Diaspora Conference.