The world cowered before the chilling shadow/specter/veil cast by Heinrich Himmler and Reinhard Heydrich, two architects of unparalleled cruelty/brutality/savagery. Their reign unleashed/sparked/ignited a terror that choked/suffocated/smothered the very soul of Europe. Driven by fanatical/rabid/sickening ideology, they orchestrated a systematic/cal