Sam Olij
Simon Paulus "Sam" Olij was a Dutch heavyweight boxer, who represented his native country at the 1928 Summer Olympics. There he was eliminated in the quarterfinals of the men's heavyweight division by eventual gold medalist Arturo Rodríguez from Argentina. Mr. Olij was also a member of the feared national socialist Nazi allied NSB party during the 2nd WW. As such he betrayed numerous Jewish people and had them arrested and deported by the Nazis. One of them being his Jewish Dutch boxing team member Ben Bril. As he arrested Ben Bril he said "plicht is plicht".