Would you have told the suffragettes to leave the country if they don’t like the rules?
Would you have told the Poll Tax protesters to leave the country if they don’t like the rules?
No, of course you wouldn’t. All those people would have been “happier” elsewhere at that moment in time. Why should it be different this time.
I don’t think you’re the Tommy Robinson type for one moment but I’ll tell you what. All the Tommy Robinson types will be cheering your view on that and as a rule of thumb if Tommy Robinson types are saying it’s right chances are it’s wrong.