Heemeyer had feuded with Granby town officials, particularly over fines for violating city health ordinances when he chose to dump sewage from his business instead of installing a proper septic tank.The NRA created the SRA and the little niche RA's when they, collectively represented by members, refused support and commonality from fringe society looking to preserve and expand our collective 2A rights. Disenfranchised might be the best way to put it.
Also, Marvin Heemeyer (Killdozer) was a patriot through and through. He took the fight against tyranny through the front door of tyrants.
I'm not sure he was a patriot.