Uhm, no. When I was a child, my dad could drive into and out of Mexico or Canada without issue or harassment. In Europe people walk across imaginary borders all the time without issue. There should be no impassable borders.

This isn't about culture. If your culture violates basic concepts of natural law, you will be punished for your actions. Anarchists believe in the NAP (Non-aggression principle). Go anywhere you want in other words, but be peaceful when there. Otherwise you're not welcome.

America was founded by multiculturalism. People came from ALL over, and they had all sorts of different religious beliefs. Wars were fought in Europe over different religious beliefs. Those people left Europe though because of government tyranny against people who had different beliefs.

Those people were not violent either. They just wanted to have their own beliefs without being forced to have different ones. That is the exact issue some Muslim nations have today. Secular nations are destroyed, such as Syria, but ones like Saudi Arabia are considered allies?

Come on! This stuff isn't exactly hidden from us.