I believe if everyone who was against the current oligarchy started placing guillotine stickers everywhere, like you might for a favorite band, people would feel less isolated in their distaste for the current system.
And in an ideal world those who the guillotines are for might realize just how much they are in the minority.
Most peoples’ first step isn’t lynching. This serves as a symbol for what is to come if they don’t stop their incessant greed. They should be afraid.