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Protesters surged forward before tear gas was fired

Five Ligue 1 matches have been postponed - with another three rearranged - because of the security issues in France as games are called off for the second weekend in a row.
The country has seen four weekends of violent anti-government protests - with more demonstrations expected.
Paris St-Germain's game in Dijon on Saturday is one of those postponed.


A minute's silence will be held before the games to honour the victims of the unrelated shooting in Strasbourg.
Strasbourg's players - whose game at Reims on Saturday goes ahead - will wear a shirt without sponsors' logos to pay respect. Three people were killed, with a fourth left brain dead and 12 others wounded in a Christmas market gun attack.
Games off this weekend (to be played at later dates)
Saturday: Amiens v Angers, Nantes v Montpellier, Dijon v PSG
Sunday: Guingamp v Rennes, Marseille v Bordeaux
Games still on
Saturday: Reims v Strasbourg (19:00 GMT)
Sunday: Nimes v Lille (14:00 GMT), Nice v Saint-Etienne (16:00 GMT, moved from Friday), Lyon v Monaco (20:00 GMT, moved from 12:00)
Tuesday: Caen v Toulouse (18:30 GMT, moved from Saturday)Source: bbc.com