The effects of slavery were pronounced on white society as well. The high cost of 19th-century slaves and their high rate of return combined to institute an oligarchic society controlled by about ninety interrelated families, where 4% of the free population controlled half of the wealth, and the lower half of the free population—unable to compete with owned or rented slaves—held no wealth at all. The white middle class was minimal: Charlestonians generally disparaged hard work as the lot of slaves. All the slaveholders taken together held 82% of the city's wealth and almost all non-slaveholders were poor. Olmsted considered their civic elections "entirely contests of money and personal influence" and the oligarchs dominated civic planning: the lack of public parks and amenities was noted, as was the abundance of private gardens in the wealthy's walled estates.