tread on sb's toes

tread on sb's toes and step on sb's toes (say or do sth that upsets or hurts sb; to upset someone, esp. by getting involved in something that is their responsibility) — (больно) задеть чьи-л. интересы или чувства; ущемить чьи-л. интересы;
≈ наступить на больную мозоль {контекстно / in limited contexts}

...It's hard to make changes in the department without stepping on a lot of toes. (Cambridge Dictionary of American Idioms)

...He's willing to step on toes to get things done. (Cambridge Dictionary of American Idioms)