六发子弹，五名死者，神秘枪手在闹市区制造了一起惨案让整个城市都陷入魁了恐慌。所有的证据都指向了前军队狙击手詹姆斯·巴尔。但他坚持自己的清白并要求把老相识 杰克·理查尔 找来，两人曾同在军队中服役。随着杰克调查的深入，他发现了更大的谜团，炮制这场惨案的真凶似乎另有其人，而别有用心的幕后黑手抓走了巴尔 ，只留下杰克一人探明真相。六发子弹中有一发漏空的子弹是杀手故意放空的。为了了解狙击手的工作，杰克特意来到了狙击手的训练营找到了一个叫做萨缪尔·卡什 的教练。在卡什和巴尔妹妹以及律师的帮助下，杰克渐渐走进了事件的中心位置，一个关于苏联改造营和俄罗斯黑帮的秘密也慢慢浮出水面……

1999年4月20日的哥伦拜恩大屠杀彻底重新定义了美国对高中学生生活的看法。这个故事完全取材于哥伦拜恩受害者瑞秋·乔伊·斯科特的言辞和日记记录，透过她的母亲贝丝·尼莫的洞察力，讲述了一个高中生的真实故事，她充满同情心和关怀的信仰使她与其他学生，包括杀害她的凶手们保持联系，而这也使她成为他们杀人计划的目标。

　　这部记录片拍摄的起因是美国哥伦比亚中学的校园枪击事件。纪录片人摩尔着眼于大屠杀的背景、环境以及公众对这个事件反应，深入到美国暴力事件的本质，把枪支作为一种符号来探讨美国自由和自我毁灭之间的联系与矛盾。摩尔通过与南方公园作者Matt Stone、美国枪支协会时任主席Charlton Heston和音乐人Marilyn Manson等人的互动，逐步揭示出科伦拜恩大屠杀发生和美国高暴力犯罪的根源。

故事聚焦1996年澳大利亚塔斯马尼亚州亚瑟港大屠杀事件，29岁的马丁·布莱恩特制造了这场血案，导致35人丧生，23人受伤。马丁被判终身监禁，不得假释。影片将还原并分析这场暴行发生的原因和方式。

“你不知道我儿子怎么死的！” “你不知道，我才知道。” 两对夫妻，生活因一场校园枪击事件而崩毁。一间房间、一张桌子及四位角色，交织愤怒、悲伤与挫折，在一个平凡又安静的午后⋯⋯。 一场校园枪击事件爆发后多年，被害者与枪手双方父母，终于首度同意在教堂会面交谈，希望透过对话能让彼此试图向前迈进，同时设法修复这场彻底撕裂他们人生的惨痛悲剧。然而，背负多年的丧子梦魇，真能在这短暂的会面之后就得到疗癒吗？搁浅在心底许久的遗憾及悔恨，真能在一切都唤不回的今日放下而释怀吗？这场献给血色劫难与温暖回忆的午后弥撒，从现在开始也从这裡结束。

比尔（迈克尔·辛 Michael Sheen 饰）和凯特（玛丽亚·贝罗 Maria Bello 饰）结婚多年，两人共同抚养着儿子山姆（凯尔·加尔纳 Kyle Gallner 饰），日子在平静和安宁之中一天天的消磨着。让夫妻两人怎么也没有想到的是，一直以来乖巧有加的山姆，竟然在校园中犯下了枪击案。

这部纪录片历时四年拍摄，获得了前所未有的访问权限，记录了桑迪胡克小学枪击案受害者家属对亚历克斯·琼斯及其网站InfoWars提起的两起诽谤诉讼的扣人心弦的法庭戏剧。

本纪录片深入探究为何会有上千名德国普通老百姓加入纳粹警卫队，并如何在大屠杀期间犯下大规模的骇人暴行。

In the wake of the 2012 Sandy Hook Elementary School massacre that took the lives of 20 first graders and their teachers, local clergymen Father Bob Weiss receives a letter from a fellow priest in Dunblane, Scotland, whose community suffered an eerily similar fate in 1996. From across the Atlantic, the two priests forge a poignant bond through the shared experience of trauma and healing.

After the Robb Elementary school shooting in Texas, local Uvalde Leader-News journalists are left to report on the fallout – and on one of their staff members. Reporter Kimberly Rubio rises to national prominence as an advocate for gun reform after her ten-year-old daughter, Lexi, is killed in the shooting. Through the journalists’ reporting, we witness the social fabric of this small Texas town unravel as Kimberly and other victims’ families search for accountability from law enforcement and local leaders. The documentary also shines a light on the critical role of community journalism, at a time when local newspapers are folding rapidly across the country.

The real-life story of Charles Whitman's deadly shooting spree at the University of Texas is retold. In August 1966, after killing his wife and mother, Whitman climbed to the top of the school's tower and opened fire on passers-by, killing 13 and wounding many others.

A man planning to commit a mass shooting at a rave is befriended by an eccentric group of partiers and finds himself conflicted about his intentions. Based on the real-life 2006 Capitol Hill Massacre in Seattle.

When a crisis suddenly engulfs an elementary school campus, a determined art teacher tries everything she can to save her class.

Janice is struggling; she moves through life as if in a haze, unable to let go of her anger and frustration. While her husband has found refuge at a new church, Janice finds it hard to seek solace in her faith despite her pastor’s pleas to heal her wounds by meeting with the mothers of her son’s victims.

A chronicle of lives lost in a school shooting. In the wake of another tragedy, we get a glimpse of each victim and see who they were, who they loved, who they hurt, and who they wanted to be.

A riveting expose about the personalities of murderers and their motives. This 72 minute film covers the McDonalds' restaurant massacre, President Reagan's assassination attempt, serial murderer Henry Lee Lucas and others.

Darrell Scott tells stories of his daughter, high school student, Rachel Joy Scott. Also included is footage from her funeral.

On February 10th, 2015, it took Craig Hicks 36 seconds to extinguish the lives of three young, Muslim Americans. Before they can grieve, the families are forced to become activists to set the record straight about the murders.

2013年9月21日，一群来自索马里与基地组织有关联的激进组织青年党的四至五名年龄在18岁至23岁之间的年轻人袭击了肯尼亚首都内罗毕的一家高档购物中心，并进行了一场疯狂的杀戮，据估计有71名不同国籍的人因此丧生。第一批响应者包括一名名叫阿卜杜勒·哈吉的武装商人和其他几名便衣警察，他们最终打电话不等待增援，而是冲进西门购物中心，目的是挽救生命。我们跟随这起恐怖袭击的幸运幸存者讲述周六下午的故事，讲述他们令人心碎的故事。其中一些人包括活着讲述自己故事的妇女和儿童。HBO还向我们介绍了第一反应者的情况，因为我们观察到他们的表现，这要归功于恐怖团伙完好的CCTV监控系统。

A psychological thriller following Jane, a survivor of a mass shooting. As she prepares to celebrate another birthday, the trauma shows itself.