@Walter Hinteler,
Egypt had demonstrations. The photos I see from Greece look like riots to me, but your perceptions could well be different.
Obviously, I was kidding about riots/demonstrations being tourist attractions. I was trying to point out that if a country's economy were even partially dependent on tourist traffic it would be somewhat counterproductive to scare off those tourists. Doesn't seem to bother the Greeks, but that's not the only problem they have.