The Lidice Massacre is probably the best-known Nazi retaliation measure in connection with Heydrich's assassination. The inhabitants of the village of Lidice, about 500 in number, were falsely accused of having harbored Heydrich's attackers. During the night of June 10, 1942, German police and SS units surrounded the village. All men over age 15 were shot, and the women and children were sent to concentration camps. Then Lidice was burned to the ground.