Your little “for better” will almost certainly morph into including things you don’t like given time.
So nothing, huh? Who is constructing a straw man here?
It is really simple. You can’t use your rights to violate the rights of other people. That is not your right. There is plenty of room left for discussing all kind of stuff, no matter how controverse or delicate it is. But otherwise some actions performed under “free speech” could even hinder people to use their own right of free speech.