Dragon Ball has never been a series that was about spreading an important message or complex themes. Goku's high-flying action never really had much of an underlying agenda or message to it, other than the classic shonen tropes like friendship, never giving up, and the like. That all seems to be changing with Super though, as recent arcs, especially Super Hero, seem to take more overt sociopolitical stances than ever before.
Source：https://www.cbr.com/how-dragon-ball-super-is-making-the-series-more-political/
