A Wikipedea of world-wide crime

On July 7, 2011, a gunman killed seven people and wounded two others in a spree killing in Grand Rapids, Michigan. The deaths took place in two homes, with the two non-fatal gunshot injuries taking place on the road. The suspected gunman, Rodrick Shonte Dantzler, later killed himself after a police chase which left his vehicle disabled in a highway woodline and after he then took hostages in a nearby house for several hours. Those killed included Dantzler's estranged wife, their daughter, his former girlfriend, and members of the other victims' families. One of the non-fatal victims was also acquainted with Dantzler.

The Collier Township shooting, also referred to as the Bridgeville LA Fitness shooting, was a mass shooting and murder-suicide that took place on August 4, 2009, in an LA Fitness health club in Collier Township, a suburb of Pittsburgh, Pennsylvania. The attack resulted in four deaths, including that of the perpetrator, who took his own life. Nine other people were injured. The fitness center is approximately 10 miles (16 km) south of Pittsburgh, in the Great Southern Shopping Center, a strip mall located in the Kirwan Heights section of Collier Township, just outside of the borough of Bridgeville.

On September 2, 2008, 28-year-old Isaac Zamora killed six people (including one sheriff's deputy) and wounded two more on a shooting rampage in Skagit County, Washington. The incident began when Skagit County Sheriff's Deputy Anne Jackson responded to a call at Zamora's home in Alger, Washington. Zamora shot Jackson and then left the residence. He shot seven additional people and led authorities on a high-speed chase along Interstate 5 before surrendering at the Skagit County Sheriff's Office in Mount Vernon, Washington.

At his 2009 trial, Zamora pled guilty to several felony charges, including four counts of aggravated murder, in the shootings, and not guilty by reason of insanity to two additional counts of aggravated murder. Zamora received four life sentences and was subsequently committed to Western State Hospital. In 2012, Zamora was moved to the Monroe Correctional Complex due to concerns that his presence posed a threat to hospital staff and other patients. In 2019 Zamora is appealing for a new trial.

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Igrić was born in 1972 in Slavonski Brod, Yugoslavia (now Croatia). During his late teenage years he trained as a locksmith in vocational school. He joined the Croatian army in 1991, when he was 19, and was discharged in 1993, after what the ambassador of Croatia, Ivan Grdešić, described as "violent behavior and substance abuse... he was connected with crimes in Croatia." When ethnic tensions began to flare during the mid-nineties he joined others in Croatia's "homeland war" of independence from Yugoslavia.

Igrić, a citizen of Croatia, entered the United States through the city of Miami, Florida during March 1999, on a 30-day transit visa. He overstayed the visa by two years, convincing US immigration officials he had relatives in Florida and New York. He worked in a restaurant in New York City before the Greyhound incident. Igrić had a long history of mental illness.

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Early on the Sunday morning of April 25, 1965, 16-year-old Michael Andrew Clark opened fire on cars traveling along U.S. Highway 101 just south of Orcutt, California from a nearby hilltop. Three people were killed and ten were wounded before Clark committed suicide upon arrival of police.

The 101 California Street Shooting was a mass shooting on July 1, 1993, in San Francisco, California. The killings sparked a number of legal and legislative actions that were precursors to the Violent Crime Control and Law Enforcement Act, H.R. 3355, 103rd Congress. The Act took effect in 1994 and expired in September 2004 after the expiration of a sunset provision. At the time, the incident was the deadliest mass shooting in the Bay Area's history, being surpassed 28 years later by the 2021 San Jose shooting.