During the era of McCarthyism, the House Un-American Activities Committee (HUAC) targeted several groups beyond those suspected of communist involvement. The correct options that apply include:
- Military servicemen
- Members of the LGBTQ community
- Nazi sympathizers
- Hollywood actors, entertainers, writers, and directors
While some specific members of the US Senate may have faced scrutiny, the Senate as an institution was not a primary target of HUAC investigations in the same way as the other groups listed. Therefore, it is not typically included in the groups targeted by HUAC during this time.