Police deployed water cannon and tear gas against an anti-Salafist demonstration by thousands of hooligans and far-right supporters in central Cologne when it descended into violence on Sunday.

Police said that 17 people were arrested during the course of the day, while 45 were injured - 44 of them police officers.

Organizers had originally given notice of a 1,500-strong protest march against Islamic fundamentalism to the police under the banner of the group "Hooligans against Salafists".

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