Many Americans are asking themselves what can be done after the shooting in Texas. Despite broad support for background checks and red-flag laws, action at the state and national levels is uncertain.
For many of the young people who've opened fire in schools, the path to violence has common traits. Psychologists and researchers have developed a body of study on the topic.
After several high-profile school shootings in recent years, school safety experts have coalesced around a handful of important measures that communities and politicians can take to protect students.
Massachusetts lawmakers formally exonerated Elizabeth Johnson Jr., clearing her name three centuries after she was convicted of witchcraft in 1693 at the height of the Salem Witch Trials.
The amount of resources devoted to studying gun violence is paltry compared to its public health impact. Still, the evidence shows certain policies might help prevent mass shootings.
Rumors, misinformation and conspiracy theories were rampant on right-wing social media before verifiable information came out about the gunman who killed 21 people at a Texas elementary school.
Hundreds of students at Oxford High School, the Michigan school where four were killed in November, walked out and formed a 'U' on the football field to show support for Uvalde students and families.
"The children!" cries Linda Martinez, a retired pastor who came to the scene with a bouquet of flowers. "So young. I just can't believe it's real. We just have to help each other."
At least five organizations in and beyond the state have sent dogs to Uvalde, where they are visiting hospitals, churches and schools. Many have responded to other mass shootings across the country.