Background Check Flaw Let Dylann Roof Buy Gun, F.B.I. Says  —  WASHINGTON — The man accused of killing nine people in an historically black South Carolina church last month should not have been able to buy a gun, the F.B.I. said Friday in what was the latest acknowledgment of flaws in the national background check system.

It's Silicon Valley 2, Ellen Pao 0: Fighter of Sexism Is Out at Reddit  —  Ellen Pao became a hero to many when she took on the entrenched sexist culture of Silicon Valley.  But sentiment is a fickle thing.  Late Friday she fell victim to a crowd demanding her ouster as chief executive of the popular social media site Reddit.

Donald Trump's Appeal—and Its Limits  —  Sometimes an ill wind feels like a breath of fresh air.  —  Donald Trump is an unstable element inserted into an unsettled environment.  Sooner or later there will be a boom.  —  He has shot up like a rocket since his June announcement but likely has a low ceiling and short staying power.