The best answer is The act infringed upon the freedom of speech and freedom of press.
As expected from a period of war, the government had to make sure their acts were not criticized and disavowed, for this matter The Sedition Act of 1918 was created. This act extended penalties for those who obstruct the government's sale of war bonds or for saying, writing, or printing anything “disloyal, profane, scurrilous, or abusive” about the American form of government, the Constitution, or the army and navy. As expected, many Americans consider this Act to be a violation of civil rights because infringed upon the freedom of speech and freedom of the press, now that anything should be evaluated by the government.