Please define a "white nationalist," for me. Is it:
A. A white person that just believes in having an actual nation with borders, border patrol and customs agents?
B. A white racist that thinks he/she is more superior to other races and wants to keep non-whites out?
Frankly, just saying "white nationalist," just gives off an impression that if you are white and want border control, you are somehow evil, which is misleading and wrong.
We were founded as a white Christian nation, so being a white nationalist is a good thing.
Being a "nationalist" is a good thing. Considering oneself as superior to those who aren't white is arrogant and racist.
I know we're already up to page six, but I wanted to clear this up. Although the terms are often used interchangeably, in political science and cultural geography, there is a difference between the terms 'state,' 'country,' and 'nation.' A 'state' is political, it is a sovereign entity formed by a constitution or other form of government; the US is 50 states, each with their own constitution, but most in the world call themselves a single sovereign state. A 'county' is geographic, it is an area on a map that you can drawn borders around.
A 'nation' is social, defined as a group of people with a single unifying characteristic, which is why you can have (for example) the Kurdish nation, even though it has neither a government (like a state) nor definite borders (like a country). It's from this sense that we get the term 'nationalism,' meaning the belief that a certain group of people deserve more, generally at the expense of others.
In a nation that is conquered or controlled by others, nationalism is an enormously powerful force; the Kurdish nation as I mentioned retains its identity due to their nationalism, and in the Civil Rights era, Black nationalism was a major source of the changes that happened. However, in the hands of a group already in power, it can be immensely destructive, as evidence by the fact that it was a root cause of both World Wars.
So white nationalism is the belief that white people deserve more from society than they currently have, and non-white people do not. I'll let you each decide whether that is helpful or dangerous in our world today.