Luckily this is filmed from a distance!
What possesses anyone to strip naked and run on to the field of play? What is the punishment for such an act these days? In the 1970s and 80s the act of streaking was far more prevalent, hell even women were known to partake in this bizarre ritual. Will this fan get a life ban? That would be harsh.
Perhaps he can serve some sort of community service penalty? Or alternatively have his naked figure plastered across the Royer Liver building for all to see, however this would appear to be a collective punishment that Merseyside inhabitants do not deserve!