Complex sentence: White American audiences stopped supporting her, and the US government also took an interest in her activities: the Central Intelligence Agency began following her, and placed hidden microphones in her apartment, and the Federal Bureau of Investigation also placed her under surveillance.
Split into simpler sentences: White American audiences stopped supporting her, and the US government also took an interest in her activities. The Central Intelligence Agency began following her, and placed hidden microphones in her apartment, while the Federal Bureau of Investigation also placed her under surveillance.