1. Gold, dollars, debt, etc., these are media of exchange, not actual wealth. If you destroy the capital structure in the process of "taking back" that "stolen" wealth, you will have a net loss of wealth. Is that what you want?
I don't deny that there is a such thing as theft of wealth. So that raises the question of what exactly makes something theft. And again, to my original point, if you steal in an effort to right the wrong you undo your own position and set up the world for continual back-and-forth theft. It ends in less wealth for everybody.
2. If my ancestry determines whether or not I am the colonized or the colonizer there is nothing I can do to break the cycle, it is genetically determined. If I attempt to "stand with the oppressed" how can I guarantee that the "truly oppressed" won't do a DNA test or something and prove I'm actually the ancestor and kill me?