German politicians and media have called for stricter laws against radical Islamist propaganda after a group of ultra-conservative Salafists took to the streets calling itself the "Shariah Police".

"No tolerance for Salafists" said the conservative Welt newspaper after a small group of men, wearing orange vests with "Shariah Police" written on them, went on a series of "patrols" in the western city of Wuppertal.

Seeking to enforce their austere moral code, they told Friday nightclub-goers to refrain from drinking alcohol and listening to music and arcade customers not to play games for money.

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