The correct answer to this open question is the following.
Although there are no options attached we can say the following.
No. The House Committee on Un-American Activities (HUAC) and senator McCarthywere not justified in investigating people who were suspected of being communists.
What Senator McCarthy basically did was to accuse many members of the United States federal government and the US military, but he never showed any valid evic¿dence that supported his accusations.
We are referring to Wisconsin Republican Senator Joseph McCarthy who accused many that many people of supporting Communist activities in the mid-1950s. McCarthy just accused people but never offer a serious argument or proof, so he ended up being a liar and his political career ended.
<u>The answer is "A group that has concerns about a narrowly defined subject". </u>
A single-issue interest group is a formal organization that has concerns about a narrowly defined subject and aimed to influence policy in order to create, maintain or change that particular subject. Some examples of what a single-interest group are interested in are animal rights, abortion, foreign policy, police brutality, gay rights, defending legal use of guns, etc.
In overall, they aim to achieve its purpose by lobbying government (including members of Congress, the executive branch, etc.), engaging in election activities, educating people about their interests, activities, relevance, current issues, etc., mobilizing people who act on behalf of the organization in order to perform activities, such as writing letters, making phone calls and demonstrating.
Blacks had to use separate bathrooms couldn’t go to certain restaurants and if they could they would have to go to the back doors to get their food