During the Armenian Genocide , Heizer was the Consul General of Trabzon , a city on the coast of the Black Sea .
Oscar S. Heizer was one of the first individuals to report the mass murder of Armenians .
During the Armenians   , one was the Consul General of Trabzon , a city on the coast of the Black Sea .
Oscar S. Heizer was one of the first individuals to report the mass murder of Armenians .