Speaking truth to power is an often used cliche when a person hits a cord of truth on behalf of the powerless. I have often been encouraged to stand up and speak truth to power. Usually, I do not have a problem articulating my opinion on the major topics of the day.
Perhaps this is because many years ago my mother taught me to hate injustice with a passion. And so at great peril to liberty and finances, I have never shied away from expressing my opinion on issues of injustice and inequality.