[21] The labor of Monroe's many slaves were also used to support his daughter and son-in-law, along with a ne'er-do-well brother and his son.
During the course of his presidency, Monroe remained convinced that slavery was wrong and supported private manumission, but at the same time he insisted that any attempt to promote emancipation would cause more problems. Monroe believed that slavery had become a permanent part of southern life, and that it could only be removed on providential terms. Like so many other Upper South slaveholders, Monroe believed that a central purpose of government was to ensure "domestic tranquility" for all. Like so many other Upper South planters, he also believed that the central purpose of government was to empower planters like himself. He feared for public safety in the United States during the era of violent revolution on two fronts. First, from potential class warfare of the French Revolution in which those of the propertied classes were summarily purged in mob violence and then preemptive trials, and second, from possible racial warfare similar to that of the Haitian Revolution in which blacks, whites, then mixed-race inhabitants were indiscriminately slaughtered as events there unfolded.

