What was Haq's motive? Well, here's an interesting clue: As he stormed through the halls, shooting and killing, he shouted, "I'm a Muslim-American! I'm angry at Israel!"
I think he was more talking about the leadership and the ingrained 'response' long term conflict with a particlar enemy creates rather than such visceral, personal, emotions. A war becomes more like a vendetta under such circumstances, with all the negatives that implies when it comes to finding a solution.