Victor Davis Hanson‘s latest National Review Online column discusses the extent to which the Trayvon Martin case has exposed one of President Obama’s flaws.

[W]hat had seemed from media accounts to be a racist first-degree murder, horrifically covered up, on closer examination might have been either second-degree murder, involuntary manslaughter, some sort of criminal negligence, or even simple self-defense — the point being that we will not know the degree of Zimmerman’s guilt, if any, until all the evidence in the case is released to the public. Daily, new information has emerged, and, daily, the previous day’s narrative has changed.

In other words, the president waded into an ongoing investigation, in which the facts of the case remain murky and in dispute. And instead of playing down the racial component of the tragedy in polarized times, he seemed instead deliberately to have emphasized it. …

… [A] disturbing pattern has developed in his editorializing, which is aimed exclusively at those whose policies and language he implies lead to horrific acts like the shooting of African-American teenagers, the smearing of young feminists, the shooting of Democratic congresswomen, or the jailing of African-American professors. Yet in every case, further evidence, more information, and subsequent events suggested that the president had offered either incomplete or misleading commentary to the nation, predicated not on a desire for healing or truth, but on a wish to gain partisan advantage.

With the world in recession, facing energy shortages, and on the brink of war, it is politically unwise for the president of the United States to offer commentary on contentious issues, especially before the facts of such disputes are fully known. To do so at worst can interfere with ongoing investigations, and at best pits the office of the presidency against private individuals. In every case, Barack Obama cannot conclude that his commentary created greater unity rather than further polarization.