This is purely from my own observations from memory, but the Muslims were angry at the US for their financial support of Israel (weapons made in the USA as aid) while our oil companies were paying approximately $3 per barrel for their oil. It wasn't too hard for the Muslims to feel like they were "victims". The Americans were the ones "victimizing" them.
It should be noted that American, British, and Dutch companies explored for oil and developed the industry throughout the region.