Memes

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.

Also at least early on Luffy doesn't even know what a pirate is and think they are just funny adventurers

Very little stealing or plundering or what every tradition pirates do

My only regret is that I have but one upvote to give for “there is a lot of shouting in general”