This booklet is aimed unashamedly at senior schools.Mr Corbyn has said that he wants "black history" taught. That, to me, is a bit racist. What we really need is to get at the truth, however unpleasant, however unfair, however disgusting.In this tale of human weakness for sugar and coffee, for riches beyond the dreams of avarice, for unchecked power over fellow members of the human race, and for common or garden business by people of all racial backgrounds,...