Book burning has never led to a socially-uplifting culture. I think being a free speech quasi-absolutist is the only viable position (apart from obvious edge-cases like yelling "fire" in a crowded movie theater, fighting words, etc., which SCOTUS is very careful to delineate).
Folks really need to read some John Stuart Mill. It's a shame to see such vitriolic response to a right our ancestors literally died for.