One could argue that significantly more people attend professional footie games in this country than rugby ones............infact almost 7 times more people attended footie games over a season than attended Rugby games, so one woule expect 7 times more violence/crimes. I would suspect that the reality is that football is far less crime ridden statistically than it's made out to be..........
2015/2016
Premier League (Football) Total attendance 13,851,829 Average 36,452
Aviva Premiership (Rugby) Total attendance 1,802,769 Average 13,354