@OmSigDAVID,
The old accounting question, "Do you want to show a profit or a loss?"
Honesty also comes into play. That was pointed out well many years ago on the first day in Acc101.
Extremism: "a person who favours or resorts to immoderate, uncompromising, or fanatical methods or behaviour, esp in being politically radical " (from an English dictionary I guess)
Extremism is the killer of Democracy as it will not allow a person to have a differing opinion.
What makes you think it would be the southern border? I can easily walk into Canada or the USA from Canada or come by boat.
Nationalism is something new though some elements have existed a lot longer. The big push to Nationalism is usually dated between 1700 and the late 1800's. It occurred at about the same time as the Industrial Revolution.
"Good - Bad, Right - Wrong and Left and Right" are dependent on orientation or an accepted definition. If you accept the concept of Right being conservative and left being liberal you should be able to grasp the others.
The US Government uses "Native Americans" as applying to a particular group and you may be one of the few people that not accept that.
We consider the "Right" to be composed of Fundamentalist, Evangelical Christians yet the "Right" has many that are not Christian of those that are few follow NT teachings. The "Left" as commie atheists, yet many are "Christian" and most are not communists.
The Right likes to use Thomas Jefferson as their example but at least he was able to see both sides. He just preferred to live on one.