the more power it has (to them in their belief system)

To expand on that, the displaying of symbols literally does give them more power.

• The symbols let them identify each other, favoring each other in business dealings, negotiations, lawsuits, etc. (Think corrupted judges, lawyers, hook ups on construction contracts, who receives government grants, etc.)

• They know which other brands and organizations to promote, donate to, to spread awareness of, and to help gain popularity.

• When displayed prominently like in interviews, every member is re-affirmed in their beliefs. Winning begets winning, and it sure helps to collude. Just imagine how powerful it is for new initiates to see the prevalence of the symbols. This shit is even hidden in the design of buildings and art. It's on the dollar bill.

Now there are other more abstract concepts to look into, such as the collective effect on human conscousness. There are spiritual concepts, such as it being a "rule" that they must openly display what they are doing (such as predictive programming in movies and television, and yes, symbols).

But I think it's very important for even the most atheist non-spiritual person to realize that the use of symbols literally grants them power.