| year | age | country | location | sought therapy? | political? | misogyny? | manifesto? | video games? | suicide? |
| 1949 | 28 | USA [NJ] | residential neighborhood | no | no | no | no | N/A | no |
| Howard Unruh targets: specific neighbors and children shy/reclusive, exmilitary, unemployed, diagnosed as criminally insane but claimed his mind to be in good order | |||||||||
| 1966 | 25 | USA [TX] | college campus | yes | no | yes | no | N/A | no |
| Charles Joseph Whitman targets: random passerby domestic violence by father towards family, fundamentalist catholic household, very intelligent, socially welladjusted, married, gambling problem, violence against his own wife but expressed horror over it, abused substances, admitted to persistent "unusual and irrational" thoughts, was aware and forthcoming with premeditation of his mass killing and even sought psychological help citicing exactly this, expressed love for his mother and wife at time of murder citing a desire to deliver them from suffering, even went so far as to request an autopsy and donate any of his life insurance to understanding and preventing a reoccurence of this event | |||||||||
| 1984 | 41 | USA [CA] | restaurant | yes | right | yes | no | N/A | no |
| James Huberty targets: random diners including many children hated government with right leanings, married with children, complained of "mental problems" to wife and contacted clinic but did not receive help, called people "dirty swine" during shooting along with angry expletives, worked many different professions, domestic violence against wife | |||||||||
| 1986 | 45 | USA [PA] | post office | no | no | no | no | N/A | yes |
| Patrick Sherrill targets: coworkers purported peeping tom (in a nonsexual sense). had low job stability and rank, had recently faced reprimands from supervisors, "socially inept loner", exmilitary, reputation for general strangeness that even children mocked, suicide | |||||||||
| 1991 | 35 | USA [PA] | restaraunt | no | no | yes | no | N/A | yes |
| George Hennard targets: random restaraunt goers, mostly women Racist, withdrawn with anger issues, unemployed, exmilitary, stalker, motives unknown | |||||||||
| 1995 | 27 | USA [OK] | Government building | no | far right/ libertarian | no | yes | N/A | no |
| Timothy McVeigh targets: government employees ringwing libertarian, exmilitary, very intelligent, shy/withdrawn/social problems, bad with girls, had trouble finding meaninful employment after military, wanted revenge for waco massacre, wrote a manifesto | |||||||||
| 1999 | 19 | USA [CO] | yes | yes | |||||
| Eric Harris targets: classmates intelligent, expressed feelings of entitlement | |||||||||
| 1999 | 17 | USA [CO] | yes | yes | |||||
| Dylan Klebold targets: classmates intelligent, supposed to be simply depressedboth posssessed a fetishisation of violence, disdain for their peers, a desire for self agrandizationl, experienced ostrisization and mocking from their peers, felt a sense of exclusion, played video games, suicide | |||||||||
| 2006 | 32 | USA [PA] | schoolhouse, Amish | no | no | no | no | no | yes |
| Charles Carl Roberts targets: young girls (ages 6-13) Confessed to wife in suicide note that he had mollested very young relatives as an adolescent and had fantasized about committing a similar act in the time leading up to the killings. | |||||||||
| 2007 | 23 | USA [VA] | College Campus | yes | no | yes | yes | yes | yes |
| Seung-Hui Cho targets: classmates, school faculty Intelligent, showed withdrawn behavior, coldness, selective muteness as a child. Became more socially isolated and showed more behavior problems as he got older. Showed stalker behaviors and made suicidal statements | |||||||||
| 2011 | 32 | Norway | Youth summer camp | yes (age 4) | far right | yes | yes | yes | no |
| Anders Breivik targets: politically opposed young adults History of steroid abuse. Abusive household in youth. Considered to be intelligent and well adjusted by his peers. Experienced business failure before shooting. Diagnosed as narcissist after shooting. | |||||||||
| 2012 | 20 | USA [CT] | Elementary School | yes | no | yes | yes | yes | yes |
| Adam Lanza targets: mother, elementary school children, school staff people Shot guns recreationally as child. Intelligent. Experienced extreme social isolation with no friends unemployed,. Anxiety, OCD, depression, aspbergers, anorexia. | |||||||||
| 2012 | 25 | USA [CO] | movie theatre | yes | no | no | no | no | no |
| James Eagan Holmes targets: random people (wished to avoid children) very intelligent, lutheran household, issues interacting socially, alleged inflicted a 'parasuicide' wound because his mother wasn't giving him attention, played video games, wracked my lifelong mental health issues including anxiety and unresponsiveness growing more severe over time | |||||||||
| 2013 | 42 | USA [FL] | apartment building | no | no | yes | no | no | no |
| Pedro Alberto Vargas targets: neighbors used steroids, quiet, poor social skills, set $10,000 cash on fire | |||||||||
| 2014 | 22 | USA [CA] | Sorority, random locations | yes | no | yes | yes | yes | yes |
| Elliot Rodger targets: social rivals, women, random people Self identified as incel. In therapy most of life, diagnosed as narcissist. Socially isolated, racist. | |||||||||
| 2015 | 21 | USA [SC] | African American church | no | far right | no | yes | yes | no |
| Dylan Roof targets: black churchgoers white nationalist, father was physically abusive towards women, dropped out of school to do drugs/video games, socially withdrawn, racist, unemployed | |||||||||
| 2016 | 29 | USA [FL] | LGBT Night Club | no | islamic extremist | yes | yes | no | no |
| Omar Mateen targets: LGBT people & nightclub goers Behaviorial issues throughout school and adult life but never sought therapy. Often used aggressive behavior and spoke of violence and sex as a child. Accused by exwife of violence. Proclaimed ties to Islamic extremist group that seemed to be self aggrandizing. Used steroids. | |||||||||
| 2016 | 45 | USA [MI] | apartment complex, car delearship, restaurant | no | no | no | no | no | no |
| Jason Brian Dalton targets: random people married with children, gave answers betraying mental instability, anger issues | |||||||||
| 2017 | 27 | USA [FL] | airport | yes | no | yes | no | no | no |
| Esteban Santiago-Ruiz targets: random people ex military, unemployed, loner, violence against girlfriend | |||||||||