They were mainly kicked out of one country, the children of British ex-cons. Americans are the wretched refuse from Peru to Russia, from China to the Mediterranean, from the four corners of the globe. It's no wonder they all hate each other. They imprision more of their own people than any other nation in the world. Their history of hate crimes is epic. They live in gated communities separated from each other. They have communities of people that try hard not to associate too much with each other like China town, little Italy, the Russian sector, Scots-Irish towns. What a shitnest.
You might as well add Canada to the target of your ire, with that perspective.