raise a/your voice against somebody/something
raise a/(one's) voice against (someone or something)
To publicly defy, condemn, oppose, or remonstrate against someone or something. The prime minister is facing heavy criticism after not raising a voice against the violence committed by the supremacist group. I was about to raise my voice against the proposal, but I was too afraid of losing my job.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
raise a/your voice aˈgainst somebody/somethingsay publicly that you do not agree with somebody’s actions, plans, etc: He was the only person to raise his voice against the plan.
Farlex Partner Idioms Dictionary © Farlex 2017