暴を以て暴に易う
Meanings
1
expression, nidan verb (lower class) with 'hu/fu' ending (archaic)
replace one tyranny with another; use violence against violence
Archaic expression from classical Chinese; used to describe a situation where a new regime or force is just as oppressive as the one it replaced. Rare in modern Japanese outside of literary or historical contexts.
The phrase 'replace one tyranny with another' warns that a revolution may end up producing the same oppression.