Let's not pretend like we're going to get results like England and Australia unless we're willing to take the measures they took, which absolutely includes confiscation.
Perhaps you have a different source, but this one says that slurs were shouted, not threats. Also, it was a billy club, something much smaller.
It's interesting how who is threatening changes based on the observer, isn't it?
In fact, there is almost nothing that one cannot possess provided the proper paperwork and licensing is observed. You can own a tank, automatic machine guns, grenade launchers, anti-tank riffles & even small rocket propelled missiles. Granted, the paperwork and fees associated with owning such items is onerous, but, they can be had.