More info here.
Where a reader George Milonas comments:
The problem with comparing London and Korean shopkeepers is two fold. First, all the property owners and law abiding citizens have been disarmed. So unless a man is going to stab all these felons to death, there really is no self defense. And it’s hard to defend against flying molotov cocktails. And Second, the British Government has made it perfectly clear that they’re willing to incarcerate anyone who defends himself. They have proven this time and again by prosecuting the law abiding citizens who are afraid for their lives.
It's part of the dangerously naive idea that by banning tools that you can make people good, that all violence is equally bad. Naturally the people that pay for these kinds of experiments are the law abiding. The rioters get to burn and loot.
Pretty shameful, but as the links notes, some similar things are happening over on this side of the Pond too.
Another link here.
In short: watch it out there, because as always you are the only one responsible of your own safety.