Protest song is considered a key dissident figure whose poetry in colloquial Arabic gave voice to the underclass in Egypt, and inspired protesters. He teamed up in the 1960s with composer Sheikh Imam Eissa who gave music to his verses, the partnership lasting for twenty years. Lines from Negm's poem "Who Are They, and Who Are We?" were chanted at Tahrir Square in 2011 during protests against President Hosni Mubarak. Music played a key role in mobilizing the 2011 protests at Tahrir Square against President Hosni Mubarak which led to the Egyptian revolution. "Ezzay," meaning "How come?" by Egyptian singer and actor
Muslim Brotherhood in Egypt more radical Qutb-inspired Islamist groups blossomed, and after Sadat signed a peace agreement with Israel in 1979, the Muslim Brotherhood became confirmed enemies of Sadat. Sadat was assassinated by a violent Islamist group Tanzim al-Jihad on 6 October 1981, shortly after he had Brotherhood leaders (and many other opposition leaders) arrested. Again with a new president, (Hosni Mubarak), Brotherhood leaders (Supreme Guide Umar al-Tilmisani and others) were released from prison. Mubarak cracked down hard against radical Islamists but offered an "olive branch" to the more moderate Brethren. The brethren reciprocated, going so far as to endorse Mubarak's candidacy for president