I havent heard of the right to be heard, but most people know of free speech.
So where are you getting the idea of the right to be heard ?
Is it a legal idea, your personal idea, a philosophical idea ?
http://www.uscourts.gov/about-federal-courts/educational-res...
https://www.thefire.org/free-speech-includes-the-right-not-j...
https://mobile.nytimes.com/2015/11/12/opinion/who-is-entitle...
A google search showed tons of different opinions and views on what I originally thought was a simple view.
So no its not as simple as people are claiming or saying