A member of an aristocratic family in ancient Rome was known as a patrician. Monarch is the ruler of the ancient Rome while the Imperator is the military commander in ancient Rome. Plebeians are the commoners or ordinary citizens of the ancient Rome.
As a Jew myself, I had heard (not knowing for sure if it’s factual) that Jews who ate Kosher food did not get the Bubonic plague. Presumably, this was due to the fact that pork carried the virus of this particular plague. It also might have accounted for the fact that non-Jews were suspicious of why the Jews were not as affected.
McCarthyism is the practice of making accusations of subversion or treason, especially when related to communism. The term refers to U.S senator Joseph McCarthy (R-Wisconsin) and has its origins in the period in the United States known as the Second Red Scare, lasting from the late 1940s through the 1950s.