To put it as flatly as possible, just look how the Ice & Fire series is laid out to you.
Every group is identified by a banner. Because this was an historic practice. Symbols are a form of language.
youtube.com/v/7KocHhWTwMw
People see a Celtic cross or hammer of Thor? They see it as Nazi or fascist if they're familiar.
The swastika? Ancient symbol, Nazis used it to tie themselves to the Romans along with the eagle.
Libertarians have a snake that doesn't like to be stepped on.
The U.S. uses an eagle to tie itself to Rome.
Ben Franklin outlines why he wanted a Turkey instead.
greatseal.com/symbols/turkey.html
Here we even see how a state adopts the poor practices of its symbol; where the men impress human behavior onto an animal, but as their symbol that animal impresses its behavior onto them.
No matter what it is, you can sum it up without words for people just by giving it a unique but easy to understand crest or insignia.
This can be applied to groups, buildings, services.
The people that master and apply this art best at the moment are advertizing agencies that put a lot of thought into every one of those logos.
See a big ass shell in the distance? Hark; a fucking gas station.
Hell, the Cocoa-cola insignia & signature red are so recognizable you can refashion it and have instant acceptance, while imparting a strange sense of familiarity, nostalgia, and a sort of… Inner peace.
youtube.com/watch?v=_WTBkj8gFfI
Also, never ever underestimate brand loyalty.
Tide brand detergent was one of the first detergents, its smell alone drives people into a comfort zone. It is also in the TOP 10 of shop lifted items.
Think about that, most of the items on that list are small.
A bottle of Tide can even be exchanged for roughly 1/1 or 2/3 its retail value in drugs.
archive.is/s8QOB
Lastly, here's a bird with a knife, instantly recognizable, yet no one's using it right now.
I now adopt it for the Opportunistic-Centrist party, it represents the Fife & Drum of regimental pre-20th century combat summed up in the phrase "Me me, pickle pee. You you, pump a rum."
This symbol now stands for class solidarity, and the desire for the wider implementation of S.T.V. democratic polling.
en.wikipedia.org/wiki/Single_transferable_vote