"We're not going to agree on every single issue. But what we have to do is to be able to create an atmosphere where we can disagree without being disagreeable and then focus on those things that we hold in common as Americans."

Now here is an interesting point. The protest against Rick Warren is that he is an opponent of same-sex marriage. But when Candidate Obama was asked to define marriage during the Saddleback Civil Forum on the Presidency, he appeared to leave no room for same-sex marriage: "I believe that marriage is the union between a man and a woman. Now, for me as a Christian -- for me -- for me as a Christian, it is also a sacred union." When asked follow-up questions by Warren, Obama endorsed civil unions and opposed a constitutional amendment protecting marriage as a heterosexual institution.

So, what's the difference? Well, as Obama indicated, he is "a fierce advocate for equality for gay and lesbian Americans." Even as he defined marriage in a way that apparently excluded same-sex marriage, he steadfastly refused to do anything to prevent same-sex marriage. Most pointedly, he opposed California's Proposition 8 whereas Warren publicly endorsed it. Before the election, the Obama campaign also provided a message from Michelle Obama expressing hope for the eventual acceptance of same-sex marriage.

In other words, the gay rights community knows that the President-elect will be a reliable friend when it comes to policy. The President-elect virtually promised to do nothing to prevent or slow down the legalization of same-sex marriage.

The outrage directed at Rick Warren must be seen in this context. It is a genuine outrage expressed by gay activists and their liberal allies. To these Obama supporters, it is unthinkable that the President-elect could have chosen Warren for such a prominent role. As one letter to the editor in Friday's edition of The New York Times expressed the sentiment, "Barack Obama’s choice of the Rev. Rick Warren to deliver the invocation at the presidential inauguration is as if Lyndon B. Johnson had selected a pastoral proponent of racial segregation to deliver the invocation in 1965."

Here is the deep irony -- Rick Warren has devoted enormous energy toward the goal of defusing the culture war and creating common ground. He has attracted the criticism of many conservative evangelicals who have been concerned about how these efforts have been positioned and for what often appears as comments at their expense. At times, Warren has even had to issue clarifications in order to make his generalized statements more specific. If the President-elect wanted to choose a figure recognized as an evangelical in the public eye, but sympathetic to much of his stated agenda to unite, he could scarcely have chosen a more recognizable figure than Rick Warren.