Yes. Free speech by no means is absolute.
If speech is restricted then by definition it isn't free. You can't really say, "I support free speech but...". If you think that there should be limits on what people are allowed to say, then by definition you oppose free speech.
There is such thing as concern for public safety and the higher courts of the U.S. agree with me on this interpretation. It's like saying that the 2nd amendment allows us to own tanks and rocket propelled grenades.
To borrow from Oliver Wendell Holmes Jr., you can't yell fire in a crowded movie theatre.