Stalking

John Lennon's killer

Mobbing, as a sociological term, refers either to bullying in any context, or specifically to that within the workplace, especially when perpetrated by a group rather than an individual.

thumb|A U.S. government video about stalking

Erotomania, also known as '''de Clérambault's syndrome''', is an uncommon paranoid condition that is characterized by an individual's delusions of another person being infatuated with them. It is listed in the DSM-5 as a subtype of a delusional disorder. Commonly, the onset of erotomania is sudden, and the course is chronic.

actress (1967-1989)

criminal trial decided October 3, 1995 in United States

attempted assassin of Ronald Reagan (born 1955)

an obsessive fan who stalks, or engages in other behaviour constituting an invasion of the privacy of a Korean idol

American actress (1954–2016)

American convicted murderer

claim or allegation of wrongdoing that is untrue

American stalker and criminal

2016 killing of a UK member of parliament

unsolicited telephone call during which profane and/or sexual language is used

American mass murderer; charged with 2011 Tucson shooting

salesman Travis Alexander was murdered in his home in Mesa, Arizona in 2008

mental disorder in which a person is overly obsessed with a public figure

American failed assassin (1887-1975)

persecutory belief system

1999 murder in Japan

American murderer

Unsolved murder in the United States

American serial killer