Justice Holmes, joined by Justice Brandeis, concluded that the first two counts failed because the leaflets attacked the President, American policy, and capitalism, rather than the constitutional form of the United States government. In his view, the leaflets therefore did not constitute the prohibited abuse or contempt of the government's form.
He agreed that the second leaflet literally urged a general strike and thus could be read to advocate reduced munitions production. But the statute required an intent to cripple or hinder the United States in prosecuting the war. Holmes distinguished intending a consequence from merely knowing that it may result: the forbidden harm must be the actor's aim or proximate motive.
On Holmes's reading, the defendants' actual purpose was to oppose American intervention against the Russian Revolution. That purpose might have been accomplished without hindering the war against Germany, and the leaflets did not show a specific purpose to impede that war. Nor did they advocate the forcible resistance to wartime governmental action that he believed the third count required.
Holmes also concluded that the First Amendment independently barred these convictions. Congress may punish speech that produces, or is intended to produce, a clear and imminent danger of immediate substantive harm that the government may prevent. But the secret distribution of a small number of anonymous leaflets by unknown speakers posed no immediate or appreciable danger to the war effort.
He warned that speech cannot be suppressed merely because officials consider its views dangerous or repugnant. The Constitution's theory is that truth is best tested in a competition of ideas, and courts must remain vigilant against restrictions on even hateful opinions unless an immediate danger makes suppression necessary. Holmes regarded the defendants' twenty-year sentences as punishment for their unpopular creed rather than for a constitutionally punishable danger created by their leaflets.