Estimé eventually fell victim to two of the time-honored pitfalls of Haitian rule: elite intrigue and personal ambition. The elite had a number of grievances against Estimé. Not only had he largely excluded them from the often lucrative levers of government, but he also enacted the country's first income tax, fostered the growth of labor unions, and suggested that vodou be considered as a religion equivalent to Roman Catholicism—a notion that the Europeanized elite abhorred. Lacking direct influence in Haitian affairs, the elite resorted to clandestine lobbying among the officer corps. Their efforts, in combination with deteriorating domestic conditions, led to a coup in May 1950.