OnePiece

I'm rolling my eyes

very true, me too.

but i can see oda coming up like - garp had to do and remain silent as a sword asset (may be sword was founded by him), and sword is indirectly affiliated to revolutionaries. Like he has to create a opposing faction within marines so that when the eventual war comes, sword will be against marines.

but yeah, he must have known something about all these genocides happening, and being always silent does not even match what we know of his character.