Answer:
provoke fear and anger in loyal Americans
Step-by-step explanation:
The importance of this was that communists were the main enemy for the people of the western hemisphere of the world, and the Americans as leaders of the western civilization couldn´t bear the possibility of habing traitors among their government. All the propaganda against the USSR made americans saw the soviets as the worst thing that could happen to the world, and this scared them to death, that´s why when they learnt that there were communists and socialists sympathizers in the white house lead them to fear and anger.