Watch as Nightline explores the life of GamerGate targets

GamerGate began as an attempt to shame and harass a female developer, and has since spread to include many other targets, including this outlet. The argument is always about ethics, but the tools are usually terror: Addresses are posted, threats are made and family and loved ones are often targeted by the group.

Last night Nightline explored what it's like to be a target of GamerGate, showing how Sarkeesian now travels with armed guards after threats of shootings were aimed at her lectures.

Months after the movement was founded, attacks seem to be continuing. There has been a wave of false reports to police departments aimed at getting SWAT teams sent to the homes of GamerGate critics, a tactic that has seemed to increase in the past weeks.

The GamerGate movement and Twitter hashtag is a social campaign defined by most supporters as a call to effect change in video game journalism and to defend the "gamer" identity. The movement is difficult to define because what it has come to represent has no central leadership or agreed-upon manifesto. The hashtag was first used by actor Adam Baldwin in August after intimate details of a personal relationship between a video game developer and a video game journalist were made public and led some to allege cronyism between press and developers. The campaign is now also linked to ongoing and well-established harassment of women in video games, including Depression Quest creator Zoe Quinn,Sarkeesian and Giant Spacekat head Brianna Wu, though many of GamerGate's supporters deny the campaign should be blamed for harassment.