Police officer set on FIRE and three more injured in violent clashes with Polish hooligans in Bongland

I believe it's a reference to the Bongish instigation of football hooliganism, dear boy:

The first instance of violence associated with modern team sports is unknown, but the phenomenon of football related violence can be traced back to 14th-century England. In 1314, Edward II banned football (at that time, a violent, unruly activity involving rival villages kicking a pig's bladder across the local heath) because he believed the disorder surrounding matches might lead to social unrest, or even treason.[10] A medieval incident records the youth of the village of High Worsall in North Yorkshire were playing football and the game ended outside the manor gates of the Prior of Durham who fined all participants.[11] According to a University of Liverpool academic paper, conflict at an 1846 match in Derby, England, required a reading of the riot act and two groups of dragoons to effectively respond to the disorderly crowd. This same paper also identified "pitch invasions" as a common occurrence during the 1880s in English football.

The first recorded instances of football hooliganism in the modern game allegedly occurred during the 1880s in England, a period when gangs of supporters would intimidate neighbourhoods, in addition to attacking referees, opposing supporters and players. In 1885, after Preston North End beat Aston Villa 5–0 in a friendly match, both teams were pelted with stones, attacked with sticks, punched, kicked and spat at. One Preston player was beaten so severely that he lost consciousness and press reports at the time described the fans as "howling roughs".[10] The following year, Preston fans fought Queen's Park fans in a railway station—the first alleged instance of football hooliganism outside of a match. In 1905, a number of Preston fans were tried for hooliganism, including a "drunk and disorderly" 70-year-old woman, following their match against Blackburn Rovers.

https://en.wikipedia.org/wiki/Football_hooliganism#:~:text=The%20first%20recorded%20instances%20of,referees%2C%20opposing%20supporters%20and%20players.