Wrong.  

I can speak all day in front of any audience and demand that the First Ten Amendments be repealed.

I can demand that the Catholic Church be made the State Church of the United States and that attendance be mandatory.

I can advocate doing away with all the 5th Amendment rights.  

I can demand that the 2nd Amendment about firearms be done away with.  

Thousands of people do that one every day; I bet you are even one of them.

I can demand that the Constitution itself be repealed!

That is just the way it is.......

Until the 1st Amendment about Free Speech is abolished.  

Then and only then, can I be silenced!