Colorado’s whitewashing of Aurora Wilkins’s murder seems like the sort of thing people of conscience would find unacceptable. Yet here we are, accepting it. On March 18, Dynel Lane savagely attacked Michelle Wilkins, butchering her to get at Aurora. Ms. Lane had been telling people she was pregnant when she wasn’t, and now she wanted a young corpse that she could pass off for a miscarriage so that she could avoid the impending awkwardness of a prenatal checkup. After luring Ms. Wilkins to her home, Dynel proceeded to stab her repeatedly with a knife. Dynel then left Michelle for dead...