Examples of Christian (or any other religion's) priests taking the politically difficult view and living by their own precepts and stated values are few and far between.

From the very beginning. Look into how the churchmen happily destroyed pagan temples and killed pagan priests in the Roman Empire when they had the power to do so. Look at how they justified and clamoured for death (including of Christians) during the Crusades. Or at how long they've taken to take a position against slavery. Or how they've bent the knee to fascists in the XXth century when it was politically expedient to do so. The few who stood by their principles are very rare, even though they've been used to whitewash their institutions later.

And to avoid getting blamed of anti-Christianity: that's also true of Buddhists (look at how they killed Muslims in Myanmar), of Muslims (the Saudis especially), and the way most Jewish synagogues have reacted to the genocide is nothing but horror and shame.

Religion (as in the institution) has almost always lagged behind virtuous developments: it's virtuous people who have largely initiated these movements and sacrificed for their cause. You don't get to the level of wealth and power that the Church has by taking morally right stances.