The larger goal was uniting Americans around the war effort.
Cracking down on dissent would be a negative action in support of the larger, positive goal the government sought. The government wanted a fully united public in support of the war, and so it put out the message that that freedom of speech might have its limits in times of war.
the best answer for this question would be A)
One of the most famous Anti-Vietnam War protest occurs in Kent State University.
The announcement of President Nixon regarding the invasion of Cambodia by the United States provoked the protest. At Kent State University, protesters launched a demonstration that included setting fire to the ROTC building of the university which leads to the Governor of Ohio to call for 900 national guardsmen towards the campus. There were a lot of casualties of the said protest making it part of the most unforgettable protests of time.