Take the Washington Post. When the JournoList emails hit, we learned that the reporter assigned to cover conservatives actively loathed them. Sometimes it spilled out, as when he tweeted that opponents of same-sex marriage are bigots. (He later offered a limited apology.) Does it not say something when the hometown paper of our nation’s capital cannot seem to find a reporter who can control his contempt for beliefs held by millions of ordinary Americans?

American history confirms the need for leaders willing to make strong moral criticisms of their opponents and society. Certainly we could not progress without them. Still, the most successful—Abraham Lincoln, Martin Luther King, et al.—have been those who appealed to the decency of their fellow citizens.

As the controversy over the planned Islamic Center near Ground Zero escalates, we have had many secular sermons on the need to recognize that the vast majority of Muslims should not be confused with the terrorists. No argument there. But how much more fruitful our own debates might be if the Judge Walkers, Mayor Bloombergs and Speaker Pelosis could extend that same presumption of decency to the American people.