Educate yourself on effective methods of building grassroots power. You can read up on how the labour movement organized in US back in the 30s which lead to the New Deal. Organize with people in your local community and help educate them. Join a principled organization that's trying to effect meaningful change.

Again, I'm not telling you not to vote. That's just a straw man you keep erecting here. What I'm actually telling you is that voting on its own doesn't accomplish much of anything.