This is a phenomena of mob violence which has been stoked up by individuals and social media.
PSNI Chief Constable Matt Baggott added it was fortunate nobody had been killed or seriously injured last night, and he praised police for doing a "magnificent" job.
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Four QPR hooligans caught on CCTV reeking havoc and attacking rival fans have been jailed.
Ex CPS boss says it was a "serious failing" by prosecutors not informing him of an investigation into allegations against Lord Janner.
Today there'll be plenty of sunshine across the British Isles with wispy cloud towards the coast.