Page "Whitney v. California" Paragraph 10

*" Every denunciation of existing law tends in some measure to increase the probability that there will be violation of it.

Condonation of a breach enhances the probability.

Expressions of approval add to the probability.

Propagation of the criminal state of mind by teaching syndicalism increases it.

Advocacy of lawbreaking heightens it still further.

But even advocacy of violation, however reprehensible morally, is not a justification for denying free speech where the advocacy falls short of incitement ..."