the.com/leveler

means A person or force that flattens differences between people or things — making everyone equal, often by knocking the high ones down rather than lifting the low ones up.

from From 'level,' tracing back through Old French 'livel' to Latin 'libella,' a little balance or measuring device (itself a diminutive of 'libra,' scale). The tool sense is old; the human sense — someone who insists on equality, by force if needed — took off in the 1600s, when English radicals literally called themselves 'Levellers' for wanting to level social rank itself. The instrument gave its name to the ideology before it ever settled down to just measuring countertops.