Equally clear is the right to hear. To suppress free speech is a double wrong. It violates the rights of the hearer as well as those of the speaker. It is just as criminal to rob a man of his right to speak and hear as it would be to rob him of his money.

Frederick Douglass (1817-1895) American abolitionist, orator, writer
“A Plea for Freedom of Speech in Boston” (9 Dec 1880)
    (Source)