The increased influx of European Jews seeking safety from the Nazis to Palestine led to resistance on the side of Palestinian Arabs. In 1936, an armed revolt erupted. During this period, Jewish settlers made use of a law from the times of the Ottoman Empire, according to which an unauthorized structure could not be demolished once it had a roof. By cover of night and with prefabricated pieces, they erected a fence surrounded by a stockade, so that, in the event of discovery by officials from the British Mandate, nothing could be done about it. At the same time, a structure of this kind was immediately defensible against attacks by local Arabs. One of these settlements was Ma’ayan (later known as Ma’ayan Tsvi), situated west of Zikhron Ya’acov on the northern coastal plain. Its 70 founding members, as members of the Maccabi Movement in Germany (and, since 1935, in Palestine itself), were prepared for pioneer life in the land.