Final answer:
The statement on page 7 reflects the high level of fear and suspicion among Americans during this time period. The Second Red Scare and the fear of communism led to extensive surveillance and persecution of individuals associated with perceived threats to national security.
Step-by-step explanation:
The statement made by the author on page 7 reflects the high level of fear and suspicion that existed among Americans during this time period. The FBI saw every radio owner as a potential saboteur, which means they believed that anyone could be involved in acts of sabotage against the country. This fear was driven by the Second Red Scare, which was a period of intense anti-communist sentiment and paranoia in the United States. The fear of communism led to extensive surveillance, loyalty programs, and even the persecution of individuals who were suspected of being associated with communism or other perceived threats to national security.