This chapter will enable readers to do the following:

1. Demonstrate knowledge of the historical context of modern terrorist violence.
2. Understand the classical ideological continuum.
3. Classify some ideologies and activism as left-wing phenomena.
4. Explain the attributes and behavior of left-wing terrorism.
5. Classify some activism and extremism as right-wing phenomena.
6. Explain the attributes and behavior of right-wing terrorism.