West Bengal's chief minister, Mamata Banerjee, defends the arrest last month of an academic in Kolkata who had e-mailed a cartoon critical of her.

ECONOMIST: A great institution shows a less attractive side

He had merely shared a cartoon about her on Facebook and by e-mail.

ECONOMIST: Banyan

PrettyPark spreads itself via an e-mail attachment bearing the icon of a character from South Park, a popular cartoon series.

CNN: New 'Trojan Horse' strain may go mainstream