I don’t think wearing slogans on shirts is much of a way to promote anything. It’s a signal of affiliation. Shirt slogans don’t change people’s minds, but they can help like-minded people recognize each other and view each other favorably.
Plus, as time goes on, the reference class of things which are promoted on shirts gets closer and closer to being all-inclusive.
I don’t think wearing slogans on shirts is much of a way to promote anything. It’s a signal of affiliation. Shirt slogans don’t change people’s minds, but they can help like-minded people recognize each other and view each other favorably.
Plus, as time goes on, the reference class of things which are promoted on shirts gets closer and closer to being all-inclusive.