up in arms (about)
/ˌʌp ɪn ˈɑːmz/idiom
very angry and protesting about something
в негодовании, на ушах
Русский аналог: «поднять бурю протеста»
Up in arms about или over something. Обычно о группе людей: Residents are up in arms about the new road.
“Residents are up in arms about the new motorway.”
“Parents were up in arms over the school closures.”
“The fans are up in arms about ticket prices.”