report last month which Director Janet Napolitano received criticism from conservative groups for saying just that, defining rightwing extremism as:

A movement of rightwing groups or individuals who can be broadly divided into those who are primarily hate-oriented, and those who are mainly antigovernment and reject federal authority in favor of state or local authority. This term also may refer to rightwing extremist movements that are dedicated to a single issue, such as opposition to abortion or immigration. (also known as far right, extreme right)