Today's head-scratcher: an angry man

Stop me if you've heard this one. Local guy in an Islamic country - Morocco, as it happens - invades a tourist resort and attacks western tourists with a machete. The Melbourne Age is absolutely baffled as to what motive could possibly lie behind such a deed. (The link keeps getting updated, and the version as of this posting is even more careful to hose down suggestions of links to a particular cultural group. It emphasises a quote by one of the tourists that the attack was "random" and the work of "just an angry man".)