By most accounts the greek people are not totally innocent in this. Tax evasion is rife, with only those who really cannot possible avoid it, paying the taxes they should. An excellent article describing some of the problems:
http://www.vanityfair.com/business/features/2010/10/greeks-bearing-bonds-201010A few choice quotes:
"The problem wasn’t the law—there was a law on the books that made it a jailable offense to cheat the government out of more than 150,000 euros—but its enforcement. “If the law was enforced,” the tax collector said, “every doctor in Greece would be in jail.” I laughed, and he gave me a stare. “I am completely serious.”
"After that I was taken off all tax investigations," said the tax collector, "because I was good at it."