DC is 95% Demorat yet here Trumpers show themselves proudly!
These displays are useful propaganda, even unwitting.
It demonstrates to the committed anarcho-communists that the right has them totally outclassed in material resources.
And likely skills as well...welding...heavy equipment...machine tools...money...land and property etc.
While it enrages them, they know a counter-revolutionary force would defeat them soundly.
I noticed large caravan of cars with US and Trump flags driving through Reno yesterday.
