Why did the Marquis de Lafayette fear further democratization during the French Revolution?

During the French Revolution, the Marquis de Lafayette supported a constitutional monarchy and favored shifting political power from the aristocracy to the bourgeoisie. However, he feared that further democratization would incite the lower classes to attack property rights.1

His concern regarding the radicalization of the revolution manifested in his actions as commander of the national guard of Paris. In 1791, when a crowd gathered on the Champ de Mars to demand the king's abdication, his troops fired upon the demonstrators, an event that significantly damaged his popularity. Ultimately, Lafayette’s commitment to a moderate, structured transition of power clashed with the rise of radical factions, leading him to attempt to suppress these groups before he was eventually forced to flee the country.21