I don’t see why municipalities could just pass local laws that nobody is permitted to demonstrate within say a mile radius of a funeral for any reason during the funeral.
That is not the kind of restriction of free speech that violates the First Amendment. Anyone who wants to have their say can simply say it somewhere else AT THAT TIME. They can have their say at that location SOME OTHER TIME.
That is not telling them they can’t express their opinion ever, just not at a time that other citizens need and deserve THEIR rights to privacy and liberty.
The First Amendment was not put in place for deranged nutjobs to hold the rest of the citizenry hostage to their aberrant behavior.
Under that logic, anti-abortion protestors can simply protest on the other side of town, right? Why do they have to stand in front of a clinic where it might upset the staff?
Telling people where they can protest is, in essence, limiting their ability to protest.
You are saying, you can have your protest....but just not anyplace where anyone might see it.
On top of that, what you are proposing is a prior restraint on free speech which is almost always deeemed unconstitutional in any context.