1. July 20, 2012, Aurora, Colorado, Theater Shooting: 10 Days Without Tweeting
2. Aug. 5, 2012, Sikh Temple Shooting: One Day Without Tweeting
3. Dec. 11, 2012, Clackamas Town Center Shooting: One Day Without Tweeting
4. Dec. 14, 2012, Sandy Hook Elementary School Shooting: Four Days Without Tweeting
5. Sept. 16, 2013, Washington, D.C., Navy Yard Shooting: One Day (And Counting) Without Tweeting
- Hillary Clinton made her debut with VP pick Tim Kaine, who spoke on support for immigration reform and gun control, dipping into Spanish.
- The gunman who killed at least 10 people at a Munich, Germany mall on Friday was an 18-year-old "obsessed" with mass shootings, police said.
- ISIS has claimed responsibility for a bombing Saturday that killed at least 80 people in Afghanistan.