Okay. Not the most scintillating title, but according to a study by Santa Clara University professor Peter Rožič published in the Journal for the Study of Religions and Ideologies ("Religion Matters: Quantifying the Impact of Religious Legacies on Post-Communist Transitional Justice"), postcommunist countries with Protestant and Catholic heritages are more likely to enact policies and practices of transitional justice in the move to democracy than those nations with Islamic and Eastern Orthodox backgrounds.
In case you're wondering, Rožič took into account (i.e., he controlled for) other factors that could lead to such differing outcomes, such as the type, duration, and the degree of bureaucratization of the communist regimes. He ended up concluding that the church-state postures of these various traditions and the degree of actual complicity between religious officials with communist regimes might be the ultimate factors behind his findings.
Note: This summary of Rožič's article is adapted from the May 2014 issue of Religion Watch (p. 6).