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It's actually very easy to get bad laws passed very quickly in the UK (the Dangerous Dogs Act, for example, was whipped up out of nowhere in the 90s due to a media frenzy and passed into law remarkably quickly despite being garbage). Plus there are very, very few constraints on the kinds of laws the Commons can theoretically pass, because we have an unwritten constitution.
//This is the UK and as much as some people may or may not agree with plenty of the things that goes on here we don't tend to change things so that a minority can be purposefully hounded. //
That's because we don't tend to elect leaders who want to do it. Aside from keeping a majority of MPs on your side, that's pretty much the only constraint. If you have a commons majority, you can do it. It would not be at all difficult for the UK's system of government to be used for that purpose if someone of that nature held power, in my opinion.