| A | B |
| nativism | fear of foreigners |
| quotas | race-based restrictions on immigration |
| isolationism | pulling away from world affairs |
| Sacco | Bridgewater shoemaker and anarchist |
| Vanzetti | Plymouth fish peddler and anarchist |
| anarchism | fear opposed to any form of government |
| communism | government control of property |
| A Mitchell Palmer | person responsible for Red Scare |
| FBI | created in 1919 to hunt for radicals |
| Calvin Coolidge | Put down the Boston Police Strike in 1919 |
| U.S. Steel | Had to give workers an 8-hour day to end a 1919 strike |
| Ku Klux Klan | Racist organization that became popular again in the 1920s |