Recently the acquittal of Noor Salman has re-opened discussion of the mass murder at the gay nightclub in Orlando, Florida, in June 2016. The photo here is of Salman (in the yellow blouse) posing with her attorneys. Salman's husband, Omar Mateen, did the deed, walking into the Pulse and killing 49 people, wounding another 53, then dying in a shootout with law enforcement. The Feds charged her as an accessory on the theory that she helped him scout the location and accompanied him on a shopping trip during which he purchased the ammunition. The jury acquitted her. Judging from post-trial interviews with jurors, this was a reasonable-doubt acquittal. For example, as to that shopping trip: it may have been that Salman was in another store buying a toy for their child, while he was buying the ammo. The issue of her complicity became bound up with the issue of his motive. The FBI's theory of the case was that he specifically wanted to shoot up the Pulse because it was a...