From The Russian Dilettante's Weblog:
Better than a crime?
'Worse than a crime: a blunder.' Some ascribe it to Talleyrand, others to Joseph Fouch?, the infamous, immoral post-Revolution police minister.
Stalin's and Beria's deporting the Chechens to Kazakhstan in 1944 was a crime.
Khruschev's reversal in 1956, which allowed the exiles to return, was a mistake. An ethically required, and morally commendable act but still a mistake. One of enormous proportions.