When antisematic feelings arrived in Egypt

The Vanished World of Egyptian Jewry
by Dr. Victor Sanua
In the '20s and '30s, when I was growing up, we rarely personally experienced any anti-Semitism.
The first serious inkling of things to come occurred on November 2, 1945, the anniversary of the Balfour Declaration. Some minor anti-Jewish agitation had broken out in 1938, but in 1945, members of the youth organization Young Egypt and of the Moslem Brotherhood attacked the Jewish quarter in Cairo, resulting in many casualties. They set fire to a synagogue, demolished a Jewish hospital, an old-age home, and other Jewish institutions. It was the beginning of the end of the Jewish, as well as the foreign, communities. A combination of factors led to their demise.
While Zionist activities were tolerated in the past, the defeat of Arab armies during the Israeli-Arab wars was instrumental in exacerbating anti-Jewish feelings.
In 1947, the Company Law was enacted, mandating all business enterprises to maintain a majority of "Egyptian nationals," 75 percent of all salaried employees in off ices and 90 percent of all workers in factories. Now began the new exodus of the Jews from Egypt. Following the 1948 Israeli-Arab war, 20,000 to 30,000 Jews, who could no longer obtain employment, left the country. Because foreign businesses and institutions were exempt from the Company Law, I was able at first to work for a business representing the Communist government of Hungary; later I joined the staff of the American Friends Services Committee, which was involved in helping Palestinian refugees in Gaza.
Egyptian nationalism intensified, and the decisive blow to Egyptian Jewry was struck in 1956 when Israel, France, and England attacked Egypt after the country had nationalized the Suez Canal. There were mass arrests, sequestrations, and ill treatment not only of Jews but also of French and British citizens.
The Egyptian Jewish emigrants scattered throughout the world. They settled in Israel (35,000); Brazil (15,000); France (10,000); the U.S.A. (9,000); Argentina (9,000); and Great Britain (4,000). A few very rich Egyptian Jews and non-Jews managed to become residents of Switzerland.
http://www.sephardicstudies.org/vanished.html