Ironically they probably have to hide their machine guns because Hong Kongers would see that as an example of a police state when you see police openly carrying assault rifles throughout European airports.
Let's face it that Asians don't go around advocating about human rights in general. That's why I find it ironic Hong Kongers that fled to England and are facing reality there, like facing eviction because they didn't pay their rent, talk about losing rights England doesn't give them either. How about those supposedly fighting for democracy in Hong Kong beating people who didn't blindly follow them...? Remember the Blind Lawyer who escaped China with Hilary Clinton's help? When he got to the US he was making demands like he deserved special treatment and insulted Hilary Clinton along the way. Unless he was an agent of the US being told what to do by the US long before, what the hell makes him think he deserves special treatment? Or look at Harry Wu who was behind closed doors demanding money from activists he claims to have helped get out of China. Or how about those I believe were Falun Gong protesting at the house of some Chinese they accused of being a communist agent talking about chopping his hands off? If all these people actually believed in human rights, these acts wouldn't have entered their minds.