Yep. That's the whole point of free speech. If someone can regulate it, it can be regulated for bad just as easily as for good, and almost certainly will be.
The idea of course, is that people are allowed to make their ideas available to people if they want to hear them. It doesn't guarantee that you can express them in any way or place you desire. That's why I hate people using the first amendment to defend violent video games or porn. While it would be pointless or stupid to do so, and there are plenty of reasons not to, the first amendment doesn't really apply.
These people have a right to say what they say, but not at a funeral, and not in a manor that constantly harasses particular people.
Because we all know from history that society is a great at distinguishing good and bad speech.
Didn't you just get done making a thread about how people didn't have a right not to be offended? If we did it your way, abolitionists would have found it nearly impossible to get support for ending slavery.