You said 1000 of years ago. Punishment shootings in Ireland happen now.That was hundreds of years ago. We don't do it any more, we've grown up and moved on. Why would we want to wind the clock back and import cultures that still believe in and support acts that we gave up way beyond living memory? In essence, what you are suggesting is that it's OK to carry out FGM in our modern society because a few hundred years ago we killed Guy Fawkes in a particularly barbaric way.
Take the Halal slaughter of animals for instance. There is absolutely no place for this unnecessarily cruel and barbaric practice in our society. Our governments is so weak they run away from tackling it. Such is their impotence that they won't even introduce measures to label meat produced in this horrific way. This creeping acceptance of alien and unacceptable practice needs to be stamped out. An un-stunned & un-anaesthetised animal having its throat sliced open because it's supposed to hear a prayer as it dies a terrible agonising death? Absolutely no place for this and other such, "culture" in the UK.
200 years ago impailment happens in Europe. Gassing and crucifixion happened in living memory. Think and check your history before you make sweeping discriminatory statements.