On pp. 109-110, 135 and 141-142 in your textbook you can read about McCartyism. Here is your chance to learn more.
Use the internet or other sources to read more about McCarthyism. You could, for example, look up Senator Joe McCarthy, or look up the Alger Hiss affair, or the House Un-American Activities Committee. Write a brief account of what McCarthyism was, or make a classroom presentation or drama on this topic.