Yes, improving the well being is the best way, but doing that is very difficult and takes time. There are so may reasons why people are unwell in the US: suburbia, car centric infrastructure, housing, education, ...

If you are transparent about what is censored and why, your aren't hiding it.

After WW2, Germany created a law against Volksverhetzung and later expanded this into laws against hate speech, which was adopted in similar ways in other countries as well.

The law seems to work well, it is not perfect, but at least the right needs to be much more careful in what they utter. Of course free speach absolutists where concered about it, with slippery-slope arguments, but their concerns where unsubstaniated so far.