Check all these as applying:
- a support of secularism
- a rejection of the aristocracy
- an interest in equality and liberty
- a pursuit of freedom and fairness
Historical context:
Prior to the French Revolution, the vast majority of the people (98% of the population), were all considered "the lower class" or "commoners," referred to as the 3rd Estate. (The clergy and aristocracy were the 1st and 2nd Estates.) So, a "lower class" person could have been a wealthy, bourgeois wine merchant ... or a day laborer in the city ... or a peasant farmer. They paid the taxes that supported the nation, while the clergy and aristocracy were almost entirely tax exempt. And the bulk of the population lived in poverty as city laborers or rural peasants. Bourgeois merchant-class folks had much more economic advantage, but also were taxed heavily and slighted on political rights.
So you can see why there was a movement against the aristocracy in the French Revolution -- as well as a movement in support of secularism. The church had been in collusion with the nobility to keep the traditional social order in place, and the Revolution was concerned about establishing equality and liberty, freedom and fairness.