That's mega-cope, sorry.
NKs live in a regime that executes you for listening to kpop.
Things are NOT the same.
Stop trying to find attenuating circumstances.
Do Brits care about their homeland, or not?
Why riot if you are unwilling to finish what you started?
Because the average Brit, and I'd say most westerners, don't.
But none moreso than the English have had their entire identity eviscerated. The Welsh and Scottish are permitted some national identity, but the English who are most Brits do not.
The average English man or woman finds that to suggest there is such a thing as an indigenous Englishness is evil. Their national flag is a hate symbol forbidden at all respectable locations. They themselves are personally responsible for anything bad to happen to anyone else ever now and for all time.
And you want people who have no culture to show and call their own, who should be ashamed of who they are to suddenly risk it all to fight to save something they "should" be ashamed of?
The ones who have rioted really do have nothing to lose. They're working class, in a country with no class mobility who are just sinking deeper and deeper into obscurity.
Not everyone is at that level (yet). There are parents who have mouths to feed, who don't want to get on the wrong side of dear leader. After all, what has rioting done other than lead to an even harder life for all of them as far as they can see?
Now I'm doomposting. But you wanted an answer. I'll admit, it's not exactly the same as North Korea in all aspects. Nobody is going to execute you by firing squad in the street. Instead, you'll be harangued by semi-anonymous mobs who will not permit you or anyone who knows you to ever be safe; see the endless harassment Tommy Robinsons family gets however rightly or wrongly.
Starmers' crackdown has shown a lot of Brits, failure to obey will make everything worse for more of them.
Things are bad, but things would need to be much worse and people would need a common purpose and identity which they don't have.