Who was incharge of investigating claims of communist activity in the government, armed forces, universities and other areas of american life during the second red scare in the late 1940s and early 1950s? a. ethel and julius rosenbergb. whittaker chambers and alger hissc. house un-american activities committee d. senate committee on homeland security and government affairs

C. House Un-American Activities Committee--this committee was created for the full purpose of investigating possible spies or threats to American security. 

This group targeted Hollywood actors/actresses for their liberal slant in the media. Intellectuals were also targeted as a source of communist ideology. Eventually small accusations turned into "witch-hunt" practices by the federal government. 

The answer is installation.