I periodically consult This Day in History to identify appropriate posting topics, which is why I knew the Great San Francisco Earthquake occurred on April 18, 1906. But also on this day: Luther stood his ground at the Diet of Worms (1521); Doolittle raided Japan (1942); Grace Kelly married Prince Ranier (1956); the U.S. embassy in Beirut was destroyed by a suicide bomber (1983); and just last year, Dick Clark died.

Here’s our final news/views roundup of the day:

* D-Trip goes for gold in SC-1 with anti-Sanford ad telling former Appalachian Trail hiker to “just keep walking.”

* And speaking of SC-1: conservative women’s group reportedly looking into possibility of Jenny Sanford write-in campaign.

* Jamelle Bouie assembles evidence that even strong support for immigration reform won’t help GOPers much with Latinos, and that’s an argument you’ll also be hearing from opponents of reform.

* At Ten Miles Square, Ezra Klein discusses three different theories of presidential leadership that Obama is relying on in gun, budget and immigration efforts.

* At College Guide, Daniel Luzer argues that online instruction works best as complement to, not substitute for, regular live courses.

And in non-political news:

* Antibiotics losing ground in race against drug-resistant bacteria.

To end the day, and to honor in a more upbeat way those responding to the disaster in West, Texas, here’s Roxy Music again with their tribute to the Big Country, “Prairie Rose,” in London in 2011.

Selah.

Ed Kilgore

Ed Kilgore is a political columnist for New York and managing editor at the Democratic Strategist website. He was a contributing writer at the Washington Monthly from January 2012 until November 2015, and was the principal contributor to the Political Animal blog.