Why did they do this? Did they do this for free?

I love that billionaires can exist, but I can't think of one that I like.

About three dozen people showed up to march for bil­lion­aires. About a dozen, includ­ing a man dressed satir­ic­ally as Mr. Mono­poly, marched against them, mock­ing the protest with signs that read, “Let them eat cake” and “Defund the poor.”