They are called the Strawhat Pirates. Their captain wants to be the pirate king. But do their actions say Pirate, or Revolutionary?
They took down Morgan and his base.
They overthrew Arlong's empire that would have gone on to control the East Blue.
They toppled a rising force in Alabasta that would have taken control of the country.
They went into the sky and defeated "God", freeing those he dictated.
They went into Enies Lobby and burned down the flag of the World Government.
Most recently, they attacked the Tenryuubito.
These are not the actions of pirates, but of revolutionaries.
If one were to really look into it, as I have, there are no scenes where the Strawhats are actually participating in Pirate activites such as pillaging or hostage taking. You never see them boarding a passing boat and taking everything of value.
The Strawhats have no pirate values.
Monkey D. Luffy has said that he wants to be free to do whatever he wants, that's why he is going to be the Pirate King.
Who else longs for freedom? Revolutionaries.
Finally, look at his father. Monkey D. Dragon is the most wanted man in the world.
The Will is Inherited.
The question posed to you all is this: Why do you believe Oda has a more revolutionary side to his arcs than a pirate one. Is this a sign of what's to come? Or is it all just coincidence?