There are really only a few weapons people have to defend themselves financially regardless of political ideology.
Voting is one.
How ever, the way way more effective ones are to become educated to develop valuable skills and then also investing (once that is actually with reach) in order to get at least your small slice of the economic pie that will always be the main course served up by the "oligarchs".
Unless you are simply born rich and entitled. I won’t mention names. It is not a crime!