They do? People have actually sued the government because their taxes were too high for their particular circumstance? I'm not trying to be facetious, I just don't know much about this topic.
It seems to me like you are trying to warp the discussion into every tool with a visible political outcome being equivalent and open to "democratic" systems. The republic is a tool for a specific purpose that is usually opposite of delivering optimal solutions to the majority. The democratic systems are supposed to deliver what you seem to want until they violate civil rights. If they dont for a reason other than civil rights, then your recourse is to petitition the republic to change the election process. But you cant make the republic actually care about your general tax rates or any other problems it allows the democratic process to handle, it can only make sweeping rules when parties are in violation of the core rules.
The argument that the state is killing you is only significant if you can make it rationally, and a 10-99% tax isnt killing you unless it doesnt exclude the poverty level in its gradients and then you dont need to be the one being killed to make the argument. A 99% tax rate that can get 50% of the vote may indicate another failure though.