The 14-year-old charged with murder in the shooting at a high school in Georgia had shown interest in prior mass shootings, particularly the 2018 massacre at Marjory Stoneman Douglas High School in Parkland,

There have been over 30 mass killings in the United States this year. The latest one took place on Wednesday in Georgia’s Winder, where four people were fatally shot at Apalachee High School. Here’s a