Mass Murderer

Shane Devon Tamura became the perpetrator of one of New York City's deadliest shootings in decades after opening fire inside a Midtown Manhattan office tower on July 28, 2025. The attack killed four people and injured several others before Tamura died by suicide. Investigators concluded that he had intended to target the National Football League (NFL) headquarters housed within the building and found writings indicating grievances related to chronic traumatic encephalopathy (CTE), although the full motive remains under investigation.

Susan Denise Atkins was one of Charles Manson's earliest and most devoted followers and participated directly in the Tate-LaBianca murders that left seven people dead over two nights in August 1969. At the Tate residence, Atkins helped restrain the victims, fatally stabbed actress Sharon Tate and wrote the word "Pig" on the front door using Tate's blood. She also participated in the murders of Leno and Rosemary LaBianca the following night. Convicted in 1971 of seven counts of first-degree murder and conspiracy to commit murder, Atkins was initially sentenced to death before her punishment was reduced to life imprisonment after California temporarily abolished capital punishment. She remained incarcerated until her death from brain cancer in 2009.

Thayne Ormsby is an American man convicted of a 2010 triple homicide in Maine. At the age of 20, he carried out a violent attack resulting in multiple deaths within a single incident. He was later arrested, convicted, and sentenced to life imprisonment without the possibility of parole.