The Balfour Day riots, took place between 2 and 3 November 1945. The riots began as anti-Jewish demonstrations on the 28th anniversary of the Balfour Declaration. Rallies were organized by the right-wing Young Egypt Party and Hassan al-Banna's Muslim Brotherhood.
 

Five Egyptian Jews and one Muslim policeman were killed in Alexandria, hundreds were injured in both Alexandria and Cairo, and an Ashkenazi synagogue was burned down.  The police reacted quickly but were unable to prevent much of the violence. However further demonstrations planned for the following day were largely suppressed.
 

Following the riots, King Farouk of Egypt denouPastenced the violence and met with Rabbi Chaim Nahum, whiles Prime Minister Mahmoud an-Nukrashi Pasha also denounced the violence and visited a number of the riot sites.

Sources: 

• https://en.wikipedia.org/wiki/1945_Anti-Jewish_riots_in_Egypt

Photo from https://en.wikipedia.org/wiki/File:S03_06_01_018_image_2380.jpg by Brooklyn Museum