These articles are more on the money than Paul Hayward's piece I think.
http://www.espnfc.com/european-championship/74/blog/post/2891011/euro-2016-fan-clashes-at-england-vs-russia-match-troubling-sign
And also this highlight how unprovoked it was
https://www.theguardian.com/football/2016/jun/12/russian-hooligans-savage-organised-england-fans-marseille-euro-2016?CMP=share_btn_tw
Not the point though. Of course they are not all angels and some are absolute scum but there are ways of managing it. If you treat people like sh it they will react more.
Farmer and his son - tear gassed 3 times in a day. Police going for it needlessly.
https://www.theguardian.com/football/2016/jun/10/england-fans-violence-marseille-police-european-championship?CMP=Share_iOSApp_Other
I mean travelled away supporting them and experiencing provocation and incompetent over zealous policing and so realise media reporting and what actually happens is often somewhat different.