Career
Walter Klingenbeck came from a Catholic family. This experience laid the groundwork for his critical stance towards the aforesaid régime, which was further strengthened when the young radio enthusiast listened to German-language broadcasts from the British Broadcasting Corporation, Radio Vatican, and other forbidden broadcasting stations. They planned to spread leaflets and built a radio transmitter through which they broadcast opposition propaganda, and called for the overthrow of the Nazi régime.
In the summer of 1941, an appeal came over the British Broadcasting Corporation to spread the "V-for-Victory" sign to herald the foreseen Allied victory in the Second World War, whereupon Klingenbeck did just that, by painting the sign on some forty buildings in Munich with gloss paint.
Klingenbeck rather carelessly told of this exploit, which led to his denunciation and arrest on 26 January 1942. On 24 September 1942, he was sentenced to death by the Volksgerichtshof, and on 5 August 1943, he was put to death at Stadelheim Prison, aged only 19.
In January 1998, a formerly unnamed lane in Maxvorstadt, a neighbourhood in the center of Munich, was named for Klingenbeck. A Realschule in Taufkirchen is also named after him.