The thing is, testosterone-fuelled aggression and territorial rivalry has to be discharged somewhere, it is an innate biological feature, a primitive drive, of young males in virtually any species - and man is no exception. Instruments such as football matches allow for these impulses to be safely contained, and ultimately discharged in harmless, regular format every week. Ironically perhaps, it is these safety valves that keeps society civil. The offended snowflakes, by closing down such outlets, will simply see aggression move to other areas of everyday life, under the radar, and inflict more real-world harm.