FBI admits it ignored red flags about Parkland shooter, failed to alert authorities

The FBI has admitted that it failed to properly investigate several warnings about Nikolas Cruz, the 19-year-old who has confessed to carrying out last month's mass shooting at a high school in Parkland, Florida. The bureau made the concession following a meeting with Congress. Cruz has been charged with killing 17 people at Parkland's Marjory Stoneman Douglas High School on Feb. 14. But multiple times before that day, Cruz had been flagged to the FBI for worrisome behavior on social media, repo...