Toy Story we found, sorta by accident, because we didnt know what we were doing, the idea of being replaced by somebody. Everybody has that fear, or encounters this jealousy at some point.
Terrorism is carried out purposefully, in a cold-blooded, calculated fashion. The declared goals of the terrorist may change from place to place. He supposedly fights to remedy wrongs -- social, religious, national, racial. But for all these problems his only solution is the demolition of the whole structure of society. No partial solution, not even the total redressing of the grievance he complains of, will satisfy him -- until our social system is destroyed or delivered into his hands.