The U.S. Senate these days seems to conduct most of its business after dark, often after midnight, and no wonder.

WSJ: Review & Outlook: The Senate After Dark

That night, 12 people were killed and 58 more injured when a lone gunman opened fire in a cinema in Aurora, Colorado, during a midnight screening of The Dark Knight Rises.

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It's probably significant that the shooter chose as his venue the midnight showing of "The Dark Knight Rises, " the latest installment in the Batman series.

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Herb Shaffer said during the service that his nephew's core goodness and selflessness came out during that midnight showing of "The Dark Knight Rises" in Aurora.

CNN: STORY HIGHLIGHTS

Mr. Holmes was arrested outside the midnight showing of "The Dark Knight Rises, " police said, still clad in body armor and armed with several weapons, including a semiautomatic rifle.

WSJ: Alleged Colorado Movie Theater Shooter James Holmes Is Charged

Few risk going out much after dark, even though the curfew begins only at midnight.

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DeJante Harris and Kenneth "Tre" Freeman III, both recent high-school graduates, hadn't previously attended a midnight movie before opting to catch the 12:05 a.m. showing of the "The Dark Knight Rises" at a theater in Aurora, Colo.

WSJ: Witnesses Describe Colorado Theater Shooting