Are you really as fucking stupid as you act? I mean you people are seriously ignorant.
Anyway, here are some Irish Open Carry Activists from the Troubles.
Also, remember that Europe was the battle ground for some serious wars: not that most of you would know about the Battle of the Somme. The US usually wasn't involved until well into the action: especially during the First World War.
So, if you want real war to come to your shore, remember most of the rest of the world won't give a shit.
Especially since they are selling you the guns to kill yourselves.