Yes, this Sedition Act of 1918 was necessary to be applied in the country in order to stop the use abusive language about the form of the Government of the United States of America. Use of such type of abusive and disloyal language about the form of the Government in the tense environment of war produce more problems for the government as well as leads to decrease of trust of people on the government so this law was necessary to be imposed across the country.
It was A. Julius Caesar who claimed the title of "Dictator for Life". He removed all the restrictions that once held rulers in check, thus becoming a true monarch with ease.