Blue versus Grey
The Civil War is, aside from scattered groups of reenactors, not that big a deal on the West Coast. The western states were mostly still territories at the time.
OTOH, it’s a pretty big deal in Nashville, Tenn. Especially the 150th anniversary observance of the War Between the States. One way the occasion was noted was with the Blue vs. Grey scooter rally. Frequent commentator Jeffraham Prestonian was on the scene, and reports here, here, and here. Nashville’s first scooter rally looks like it was a good time.