quote from page 2.
Rightwing extremism in the United States can be broadly divided into those groups, movements, and adherents that are primarily hate-oriented (based on hatred of particular religious, racial or ethnic groups), and those that are mainly antigovernment, rejecting federal authority in favor of state or local authority, or rejecting government authority entirely. It may include groups and individuals that are dedicated to a single issue, such as opposition to abortion or immigration.
I guess the founding fathers would be in big trouble for their inclusion of states rights in the constitution. And lookout for those wacky volunteers at Crisis Pregnancy Centers..