May 6 1937 Arabs Besiege and Attack
Arabs besieged Haderah and attempted an attack on Rehovoth.
Source: Anglo-American Committee of Inquiry on Jewish Problems in Palestine and Europe. Report to the United States Government and His Majesty;s Government in the United Kingdom, Lausanne, Switzerland, April 20, 1946. Wahington: U.S. Govt. Print. Off, 1946.;
http://www.middleeastpiece.com/palestinianviolence.html