- tread on somebody's corns
- tread on somebody's toes/corns
наступить на любимую мозоль; задеть (обидеть)
I would like to organize the fete but I am afraid to suggest it in case I tread on someone's toes.
He is very tactless and is always treading on other people's corns.
Англо-русский словарь идиом и фразовых глаголов. 2013.