The man said he was a Nationalist, not a White Nationalist, which is a different thing entirely. “Nationalist” has a specific meaning and one most of us here, I posit, will fit within it. If you hear a dog whistle, you have political tinnitus.
Nationalist —
1. Devotion, especially excessive or undiscriminating devotion, to the interests or culture of a particular nation-state.
2. The belief that nations will benefit from acting independently rather than collectively, emphasizing national rather than international goals.
3. The belief that a particular cultural or ethnic group constitutes a distinct people deserving of political self-determination.
If you do not fit within that definition, I look askance at you.
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“You can vote your way into socialism, but you have to shoot your way out.” — Too fundamental to have an attribution