Multicause!

Too many reasons that this happened. From TampaBay.com:

TAMPA — Marine reservist Jasen Bruce was getting clothes out of the trunk of his car Monday evening when a bearded man in a robe approached him.

That man, a Greek Orthodox priest named Father Alexios Marakis, speaks little English and was lost, police said. He wanted directions.

What the priest got instead, police say, was a tire iron to the head. Then he was chased for three blocks and pinned to the ground — as the Marine kept a 911 operator on the phone, saying he had captured a terrorist.

Police say Bruce offered several reasons to explain his actions:

The man tried to rob him.

The man grabbed Bruce's crotch and made an overt sexual advance in perfect English.

The man yelled "Allahu Akbar," Arabic for "God is great," the same words some witnesses said the Fort Hood shooting suspect uttered last week.

"That's what they tell you right before they blow you up," police say Bruce told them.

So he may be gay, have roid rage, and be worked up by right-wing rhetoric in the wake of Ft. Hood.