It's a cartoon about a boy who is very stretchy because he ate a magic fruit who is determined to become the king of all pirates. To do that he has to have fistfights with other people who ate magic fruits which gave them different powers. Everyone shouts out the name of their special moves during the fights. There is a lot of shouting in general.
It is a shonen, so fight is a core element. But overall also adress problems like: pathological system, slayvery; abuse of power, navy working just in intrest of government and rich, discrimination. It's not ideal for sure, but I am impressed how much values oda puts in such popular thing. Also in tactful way, show the fight with these problems as somenthing natural, right, just human. So you can easily identity with.
So i will not underestimate one piece, imo it can trigger a reflection in some people's minds or even stay there as subliminal message. No one borns with defined values or ideology. Finding them is a process and most people don't start from the radical ones or clear point. Thats why we need the communication on varied leveles, dedicated to people who are in different places on this way. Smuggles some part of ideas and values into pop-culture could be more effective than typical agitation; because not evereone can at this moment understand it. And incomprehension of step by step method is the global problem in activists community.
Legit answer: It's the best selling on-going comic of all time, and for good reason. The author has an incredible knack for writing, comedy and world building. At first it all seems quite basic and irreverent, but as the story progresses it not only becomes more involved and compelling, but you start to understand that more and more of what happened before is actually deeply significant to the overall story. I think it's up somewhere around 1000 named characters in the series now, and the majority of them are actually very well written no matter how short their appearance is, with many continuing to have a place in the grand narrative.
Oda even made a specific point recently about how many of the ordinary revolutionaries don't actually understand that they aren't fighting a class war against royalty itself.
One Piece: the Shonen manga where the boss of all queer people is an awsome revolutionary working to overthrow a reprehensible racist and classist regime. Oda was always a visionary