We didn't come up with the idea, (but we wish we had) but Saturday, August 26, 2017 is "National Topless Day." A day for women to set their puppies free in some fashion in public as a way to protest the inequality of men and women being allowed to go shirtless in American society.
Go Topless Day was founded by Rael, the leader of the Raelians, in response to the arrest of Phoenix Feeley, a topless activist who was arrested for being topless in public in New York in 2005. The city of New York ended up settling with Feeley for $29,000 because toplessness is actually legal in New York.
Ok..so the Raelians are a kinda weird group that believe life on Earth was scientifically created by a species of extraterrestrials, which they call the Elohim. Members of this species appeared human when having personal contacts with the descendants of the humans that they made. Evidently the extraterrestials didn't mind women going topless, which most bikers would say is alright with them too.
For a list of cities where planned activities and parades are taking place, you can visit the website GoTopless.org. If your group is planning a topless motorcycle ride, please list it here or in the comments.
Additionally, there's a map of the USA with the states where going topless is actually legal, or at least there's no state statute against the practice.