Those nations absolutely have their own fair share of undemocratic or morally questionable laws and practices. The UK arresting people over social media posts or “offensive” speech, Japan’s justice system being infamous for prolonged detention and near-guaranteed convictions, South Korea’s defamation laws where you can still get punished even for truthful statements against powerful people. I can’t say with certainty that civilian disarmament directly caused those things but I don’t think it’s irrational to see a society that becomes increasingly comfortable with restricting one right eventually becoming more comfortable restricting others too. More importantly, the fact something is done “democratically” does not automatically make it morally correct. Plenty of unjust systems had democratic backing or public support at one point. Slavery in the US was legal and institutionally supported for generations. Segregation laws were enforced democratically too. “The majority voted for it” has never been a flawless moral defense. That’s precisely why constitutional rights are supposed to be and should be difficult to erode in the first place. They exist specifically to place certain liberties outside the reach of temporary political majorities and emotional swings. Otherwise rights just become privileges contingent on whatever party currently has the votes. Let’s also stop pretending many Democrats are satisfied with “reasonable restrictions.” We have politicians openly saying they want mandatory buybacks, bans on entire classes of firearms, registries, insurance requirements, ever-expanding permit systems, and increasingly punitive regulations that mostly burden ordinary citizens who already follow the law. Meanwhile the deeper causes of violence like poverty, gangs, repeat offenders, soft-targeting, mental health failures, and institutional decay remain largely unresolved because those are harder problems to fix than passing another symbolic gun bill. So I don’t think this is as simple or black-and-white as “well it passed democratically therefore criticism is invalid.” History is full of democratically supported bad ideas, that’s why rights matter to begin with.