On news of the ban, a riot in one city left ten people dead.
The turmoil in Port Said, located on the Mediterranean coast at the mouth of the Suez Canal, started on Jan. 26, after a court issued death sentences against 21 defendants mostly Port Said residents for involvement in a deadly soccer riot in the city in February 2012 that killed 74 people, mostly fans of a rival Cairo soccer club, Al-Ahly.
They were "provocateurs" who forced taxpayers to spend millions of shekels to deploy 2, 500 policemen armed with riot gear to the city.
If so, they may have been stung into action by the City of London riot.
But in the confused, edgy atmosphere of a city convulsed by riot, all groups seemed suspicious, treacherous.
Riot police in the Turkish city of Istanbul have used water cannon and tear gas to prevent leftist May Day marchers reaching the main square.
Riot police were deployed after a city centre big screen failed and several arrests were made.
Riot police are also patrolling the city of Lichuan in central China after crowds attacked government offices.
Hundreds of business owners have clashed with riot police in an eastern Chinese city after a row over taxation, reports on official media say.
We looked at the details of 197 people who were charged with riot-related offences at Manchester City Magistrates Court up until 23 August - amounting, we believe, to the vast majority of those individuals prosecuted.
Some may remember 1968 when the games were held in Mexico City despite a campus riot in which many students were killed, and two African-American competitors flashed a black power salute through the national anthem to protest against racism in America.
In Birmingham, riot police surrounded the Mailbox, the city's upmarket shopping centre, following the disturbances seen in the area on Monday night.
Large teams of officers in full riot gear took control of parts of the City of London when they were met by a small number of trouble-makers.
Tuesday at a prison in the city of Gomez Palacio when prisoners began to riot and opened fire, officials said.
Meanwhile, Hong Kong's Ming Pao Daily News and Sing Tao Daily report a riot erupted between migrant workers and locals in the southern city of Zhongshan.
But security forces in riot gear took to the streets Friday in regions of the city that could turn tumultuous after results are announced.
Another showed that the unrest had spread beyond the capital -- police clad in riot gear dispersing a crowd at a university in the southern city of Shiraz, beating screaming women with their batons.
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Cairo (CNN) -- Egyptians, angry at reports of inadequate security at a soccer match where 79 people died Wednesday in a riot, clashed with police, leaving two dead in the city of Suez and at least 900 injured in Cairo, officials said Friday.
Thousands of riot police and members of the Basij militia lined the streets of the city, according to eyewitnesses.
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Tulsans of all races came together last year to commemorate one of the ugliest events in Oklahoma history, the Tulsa Race Riot, which resulted in the deaths of dozens of residents of the city's then-prospering black community.
Although some black leaders, including Jesse Jackson, blamed the city authorities for not having supervised the club properly, the race riot that might once have been expected never occurred.
In the first few days of May, 1866, for example, some city firefighters actually helped set fires to homes as part of a riot in Memphis that destroyed schools, homes, and churches, left dozens dead, and served as a catalysts for Radical Reconstruction.
Security was tight in Mexico City for the inauguration earlier as petrol bomb-wielding protesters clashed with riot police who fired tear gas.
Until they were pulled back from most of the squares and the street corners in the city centre a couple of days ago, there were long lines of riot police, revolutionary guards and 'basijis' - militia men mainly armed with thick wooden clubs.
Down a narrow alley not far from the sparkling city centrepiece of Federation Square is dark, pokey Rutledge Lane, where a wild riot of colour spills over every surface and stretches storeys high.
On Dec. 18 in the Durango city of Gomez Palacio, 23 inmates and guards died during an attempted jail-break and riot at a state prison.
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Walid, who defected from the riot police, is quoted in the report as saying that officers bragged about raping women during raids in the city of Daraa, the birthplace of the anti-regime uprising.
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