The Muslim Brotherhood is the best-organised political movement in the most influential country in the Arab world. But what do they do next?
The Muslim Brotherhood tells ITV News they are against violence but will "pay the price of their blood" to restore their ousted president.
Many Egyptians may welcome the overthrow of Morsi's regime, but the military coup is not welcome at the White House.
Muslim Brotherhood called the sentencing to death of 529 of its supporters by an Egyptian court "inhumane and a clear violation of all norms of humane and legal justice."
A statement from the religious and political party's London office described the sentencing as "shocking and unprecedented".
"The verdict is yet another clear indication that the corrupt judiciary is being utilized by the coup commanders to suppress the Egyptian revolution and install a brutal regime which surpassed decades long of oppression and tyranny in Egypt's history," Muslim Brotherhood said.
The group stressed it will appeal the court ruling "and defend basic rights of Egyptians".
Three journalists working for the Gulf new agency Al Jazeera have been detained in Egypt accused of broadcasting illegally from a hotel suite among other allegations.
Al Jazeera has named them as former BBC journalist Peter Greste, Baher Mohamed and Mohamed Fahmy.
A fourth person - a cameraman - was arrested with them on Sunday but has since been released. The other three have been remanded in custody for 15 days.
Egyptian authorities have accused Al Jazeera of backing the Muslim Brotherhood, which was recently ruled a terrorist organisation.
The Brotherhood leader and presidential candidate Mohamed Morsi was overthrown last year.
University buildings have been torched and one student killed as supporters of the Islamist Muslim Brotherhood clashed with police at the Cairo campus of Al-Azhar University, state media reported.
State-run newspaper Al-Ahram said that security forces fired teargas to disperse pro-Brotherhood students who were preventing their classmates from entering university buildings to take exams.
Protesters threw rocks at police and set tyres on fire to counter the teargas. Al-Ahram quoted a health ministry official as saying that one student had been killed and five injured.
The violence followed clashes across the country on Friday in which at least five people died.
Two college buildings caught fire in Saturday's violence. State TV broadcast footage of black smoke billowing from the faculty of commerce building and said "terrorist students" had set the agriculture faculty building on fire as well.
An Islamist student was killed and several arrested after supporters of the now outlawed Muslim Brotherhood clashed with Egyptian police at a university in Cairo, according to state media reports.
Egyptian students loyal to the Muslim Brotherhood set fire to two building amid clashes with police at the Cairo campus of Al-Azhar University, state television reported.
A student activist said a supporter of the Brotherhood had been killed - a claim denied by a security source.
State-run newspaper Al-Ahram said the clashes began when security forces fired teargas to disperse pro-Brotherhood students who were preventing their classmates from entering university buildings to take exams. Protesters threw rocks at police and set tyres on fire to counter the teargas.
Egyptian authorities have detained senior Muslim Brotherhood leader Essam el-Erian, the latest arrest in a government crackdown against the Islamist movement, Reuters reported, citing an Interior Ministry source.
Erian, the deputy leader of the Brotherhood's Freedom and Justice party, was taken into custody from a residence in Cairo where he had been in hiding.
"Yes, he's been arrested and details will soon be released," the source told Reuters.
A court in Cairo has banned all activities of the Muslim Brotherhood in Egypt.
There were fears the verdict could trigger more violent protests.
Egyptian police have captured senior Muslim Brotherhood official Mohamed El-Beltagi ,security sources told Reuters.
Beltagi appeared in a recorded statement aired by the Qatari-owned Al Jazeera television news network this week in which he urged Egyptians to join rallies against the military on Friday.
The crackdown on the group began after Egypt's army deposed President Mohamed Mursi, a Muslim Brotherhood member, on July 3rd.
Egyptian security forces have arrested the spiritual leader of the Muslim Brotherhood, state media reported.
Mohamed Badie was detained at a residential flat in Nasr City in northeast Cairo, the state news agency reported.
The militant allies of the Muslim Brotherhood are likely to intensify their attacks on the Egyptian police and on government buildings.
At the same time the Brotherhood itself will encourage its supporters and members to continue street demonstrations, regardless of the great risk.
It is now portraying itself not as a party in a conflict, but as a persecuted party - the victim of a military dictatorship that all Egyptians should fear.
The Brotherhood needs continued persecution and sacrifice to try to peel away support for the generals.
For their part, the generals are trying to deny them the oxygen of street demonstrations. They have introduced a state of emergency, which means curfews and powers to arrest people and apparently to shoot them without much accountability.