Who is Roger Casement?

Many knew of the slave system in King Leopold’s Congo rubber plantations– but British Consul Roger Casement was the first to make the world take notice. He created the 20th century's first international human rights movement, and was knighted for his work. Two years later, he was hung for treason, after an abortive plot to enlist German aid for Ireland’s Easter Rising. A widely-popular clemency movement had collapsed when Britain secretly circulated private diaries alleged to be Casement’s. Shocking if true, the diaries are still a matter of passionate contention, a century after Casement’s death.