Banning “hate speech” without restricting political speech is prohibitively difficult because of the target’s inherent subjectivity. That's the crux right. As soon as you decide that a certain kind of speech is "illegal", the goalposts shift to convincing others that speech you don't agree with falls in the illegal category. Even what seem like sensible categories like inciting to violence immediately get spun around…
You talk about how categories that "seem like sensible" ones get "spun around" too much for politics. So are you promoting no restrictions whatsoever ? How close to violence do you want to allow? How allowable is a specific threat before it is actionable? How much intimidation is allowed to influence "free" action in your mind in the name of preserving "free speech" before it has too high a cost of preventing "free a…
We also have laws and civil actions for fraud, defamation, slander, libel. For all of them a key component is that you are lying to achieve some end- take money, or ruin someone's reputation.
These lines are actually very easy to draw. If the thing you are bothered by and trying to outlaw is the thought behind them then they are protected. If you are trying to stop something that would be considered criminal or a civil tort regardless of how it was achieved (stealing, making some think he is about to get hurt, ruining someone's reputation) then it is not protected.