Final answer:
Harold Lasswell believed that mass media would be used as instruments of propaganda.
Step-by-step explanation:
Harold Lasswell, an early scholar, feared that the mass media would be used as instruments of propaganda. In the early twentieth century, mass media, such as newspapers and radio, became powerful tools for spreading systematic advertising of those in power. During World War I, a massive propaganda campaign aimed to pressure men into fighting and women into supporting the war.