Notable perpetrators of mass shootings in the U.S. include Eric Harris and Dylan Klebold , Edward Charles Allaway , James Edward Pough , Carl Robert Brown , Omar Mateen , Robert A. Hawkins , James Oliver Huberty , Nathan Dunlap , George Hennard , Dylann Roof , Adam Lanza , Nidal Malik Hasan , Charles Whitman , Jeff Weise , Gang Lu , Patrick Sherrill , Eric Houston , Barry Loukaitis , Laurie Dann , Christopher Harper-Mercer , Gian Luigi Ferri , Mark Essex , Scott Evans Dekraai , Steven Kazmierczak , Jennifer San Marco , James Eagan Holmes , Anthony F. Barbaro , Michael McLendon , Rodrick Shonte Dantzler , Jared Lee Loughner , Seung-Hui Cho , Elliot Rodger , Charles Carl Roberts IV , Rizwan Farook and Tashfeen Malik , Robert Lewis Dear , Mitchell Johnson and Andrew Golden , Aaron Alexis , Wade Michael Page , Patrick Edward Purdy , Gavin Eugene Long , Micah Xavier Johnson , Kyle Aaron Huff , One L. Goh , Randy Stair , Stephen Paddock , Devin Patrick Kelley , William Atchison , Nikolas Cruz , Dimitrios Pagourtzis , David Katz , Robert Bowers , Scott Beierle , Ian Long , Zephen Xaver , Dakota Theriot , Gary Martin , John T. Earnest , Trystan Terrell , Devon Erickson and Alec Maya McKinney , DeWayne Craddock , and Santino William Legan . Males account for 98 % of mass shooters . According to a database compiled by '' Mother Jones '' magazine , the race of the shooters is approximately proportionate to the overall U.S. population , although Asians are overrepresented and Latinos underrepresented . Criminologist James Allen Fox said that most mass murderers do not have a criminal record , or involuntary incarceration at a mental health center , but an article in '' The New York Times '' in December 2015 about 15 recent mass shootings found that six perpetrators had had run-ins with law enforcement , and six had mental health issues
Devon Erickson and Alec Maya McKinney
STEM School Highlands Ranch shooting
Mass shooting