Many of those complicit in the executions were never brought to justice, although efforts have continued well into the 21st century. Kang Kek Iew (Comrade Duch), the overseer of s-21, was charged with crimes against humanity in 2007. | Many of those complicit in the executions were never brought to justice, although efforts have continued well into the 21st century. Kang Kek Iew (Comrade Duch), the overseer of s-21, was charged with crimes against humanity in 2007. |