Grainy, threatening footage of the Dr. Seuss character, seemingly made with A.I., have terrorized schoolchildren and set off investigations in several countries.

Grainy, threatening footage of the Dr. Seuss character, seemingly made with A.I., have terrorized schoolchildren and set off investigations in several countries.

The German actress Collien Fernandes set out to discover who was pretending to be her and sending men sexually explicit material. Her answer ignited a feminist movement.

© Laura Stevens for The New York Times

Kyle William Spitze was part of an online extremist movement that coerces young people to do self-harm, officials said. Two of his victims died by suicide.

© Wade Payne/Associated Press

An appeals court reduced the award to the parents of one victim to $6 million from $49 million, citing a Texas damages cap. The conspiracy theorist owes over $1 billion in other cases.

© Nic Antaya for The New York Times

Widespread online abuse and visits from the police show the added risks women take standing up for their beliefs in a patriarchal society.

© Atul Loke for The New York Times