How was the word McCarthyism formed and what did it mean?

The word McCarthyism was formed because of the controversial practises of former US Senator John McCarthy where he made some unconfirmed allegations.

The word McCarthyism means to make an accusation of disloyalty against someone without proof or based on flimsy evidence.

a) hostility to or prejudice against jews.

b) the holocaust, also referred to as the shoah, was a genocide during world war ii in which nazi germany, aided by its collaborators, systematically murdered approximately 6 million european jews             , around two-thirds of the jewish population of europe, between 1941 and 1945.