Here you go people, you can rest easy…
As late as 1922, the Court held that “neither the 14th Amendment nor any other provision of the Constitution of the United States imposes upon the states any restrictions about ‘freedom of speech’ . . .”.
But only three years later, however, the Court did an about-face, and began to institute the “trickle-down” theory of constitutional jurisprudence, better known as the incorporation doctrine.
– Blatantly stolen from Would the Real First Amendment Please Stand Up? by Barry Krusch