raise one's voice

To raise one's voice in protest, just as the protest is expressed in life, in the streets, in relationships and friendships," she said. "

From Los Angeles Times ● Sep. 7, 2017

I suppose it is scarcely worth while confessing that I have never made a public speech before and have no idea how much one should raise one's voice.

From The Ranch Girls and Their Heart's Desire by Margaret Vandercook

With such a noise in the streets it was necessary to raise one's voice in order to be heard.

From The Atlantic Monthly, Volume 17, No. 102, April, 1866 by Various

Of what avail was it, I reflected, to raise one's voice in the wilderness of theories?

From An Anarchist Woman by Hutchins Hapgood

Luckily, again, there was no necessity to raise one's voice.

From The Shadow Line; a confession by Joseph Conrad