Communists were associated with the color red because of the red flag of the Soviet Union -- thus the "Red Scare." One manifestation of the Red Scare was how people's privacy was invaded. Accusations about communists and communist sympathizers were aimed at all sorts of people. Many people in the Hollywood film industry were targeted during that time, for instance. But defenders of freedom (including film and television people) fought back against that. Those who aimed to protect the rights and liberties of each individual saw the Red Scare tactics as "witch hunts," where we suspect our neighbors of evil for no good reason.
Speaking of "witch hunts," the playwright Arthur Miller wrote a really powerful play in 1953, during the Cold War, which focused on the Salem witch trials. He was making the point that what was happening in the Red Scare (hunting for communists) was another manifestation of the witch-burning craze that had happened at a previous time in history.
Red Scare was the name given to the widespread fear of suspected Communists and radicals in the United States after World War I. The correct option among all the options given in the question is option "A". The first Red Scare happened in the United States during the 20th century and the reason was hyper nationalism in respect to World War I.
A failed revolution in Germany" is not true. The revolution that was taking place in German was in fact quite good at mobilizing workers, unfortunately mostly for militarization.
the US was very concerned because of the fact that Cuba had nuclear missiles within range of Washington D.C. and the leader of Cuba was being heavily supported by the Russians which at this time the US were involved in a cold war with where each side was moments from launching nuclear missiles at one another.
Plessy v. Ferguson, 163 U.S. 537 (1896), was a landmark decision of the U.S. Supreme Court that upheld the constitutionality of racial segregation laws for public facilities as long as the segregated facilities were equal in quality – a doctrine that came to be known as "separate but equal".
We have the expectation that they should take care of us and do what's best for the country. That they should stop crime and build the things we need in turn for taxes