How did senator joseph mccarthy infringe on american’s civil liberties?

a: he hunted down communists or homosexuals and burned them at the stake.

b: he curtailed their rights to participate in government by claiming certain americans were communists or homosexuals.

c: he investigated members of the art community for their poor portrayal of american leaders.

d: he established a commission to question americans on their activities in europe during world war ii.

I'm afraid thats the wrong answer :/

He curtailed the rights of people to participate in government by claiming certain Americans were commuitst or homosexuals.  

interest groups send representatives to state capitals and to washington, d.c. to put pressure on members of congress and other policymakers. they engage in lobbying, or the organized process of influencing legislation or policy. lobbying can take many forms. interest groups can testify in congressional hearings.

our former president bush did 9/11