The point I'm making is that you're wrong to think that the "British union movement [.. is] destructive", in actual fact the unions have been unfairly scapegoat

The point I'm making is that you're wrong to think that the "British union movement [.. is] destructive", in actual fact the unions have been unfairly scapegoated and villainised for decades leading some people to believe what you believe. Of course, maybe you're not buying into the propaganda but actually purposefully spreading it. Or maybe my opinions are wrong, but I obviously don't believe that to be the case. I'm afraid I can't be much more useful in my argument, I've met and discussed with many British trade union leaders and representatives, as well as many managers who didn't enjoy having to deal with unions and I have a very strong opinion that you're wrong without really having a thought about how to change your mind other than suggesting learning more about the subject. If you'd be interested I'd be happy to text a friend and ask if they have a recommendation for a single book to read about it, or maybe your mind is already made up.