Q&A: What is the online forum 8chan?

An anonymous online forum called 8chan has drawn attention in the wake of mass shootings in Texas and Ohio because violent U.S. extremists have used it to share tips and encourage one another. The site suffered sporadic outages Monday after its cybersecurity provider cut off support for what it called a "cesspool of hate."

Classmates: Ohio shooter kept 'hit list' and 'rape list'

High school classmates of the gunman who killed nine people in Dayton, Ohio, say he was suspended years ago for compiling a "hit list" and a "rape list," and questioned how he could been allowed to buy the military-style weapon used in this weekend's attack.

Neil deGrasse Tyson faces backlash for tweet about mass shooting data

(FOX NEWS) -- Astrophysicist and television personality Dr. Neil deGrasse Tyson sparked backlash for a tweet Sunday he wrote following this weekend's mass shootings in Dayton and El Paso, showing an apparent low death rate when compared with other types of tragedies.

10-year-old drags toddler to safety amid Calif. gunfire

A gunman cut through a fence at a popular California garlic festival and turned to a tent where the Honey Ladies were selling their habanero and garlic honey. He shot and wounded the business owner and her husband, but thanks to a 10-year-old girl, their young son escaped harm, witnesses say.

Events look at balancing security, ambiance after shooting

Event organizers should review their emergency plans after a deadly shooting at a California food festival to see if they can make additional safety improvements as the peak of summer and fair season culminates with a series of open-air events that are notoriously difficult to secure, law enforcement experts said.