.... As a practical philosophy, Islamism can be traced back to an Egyptian schoolteacher named Hasan al-Banna. In 1928 he founded the Muslim Brotherhood, a group devoted to restoring a fundamentalist idea of Islam to government and society alike.
At the time, thinkers in the Muslim world were obsessed by the West's colonial dominance and by their own civilization's decline. Banna was a populist who aimed his idea of Islamic revival at a wide audience by putting his thoughts—and his rigid interpretation of the Koran—into plain words.
The movement tried to broaden its appeal still further by emphasizing social justice and providing welfare services. The Muslim Brotherhood's methods have inspired Islamists ever since, including, today, the members of al Qaeda and Hamas. [The Wall Street Journal] Read more [via Islam in Europe]