Presumably the best way to fight Israeli genocide is outside of Israel;
the best way to fight Uighur genocide is outside of the PRC;
the best way to fight Iranian theo-fascism is outside of Iran;
and the best way to fight capitalism, is outside of a capitalist country.
One could go to, say, Cuba, or North Korea, or any country one thinks is truly, or at least mostly, Communist, or maybe a rebel-held area, and fight against capitalism and/or build socialism.