Hobbes believed that humans are driven to attack and prey on one another mainly by fear of uncertainty.

BBC: A Point of View: A time when violence is normal

The bus believed to have been used in the attack was driven into the court complex on Tuesday.

BBC: Delhi rape case: Defendants face first witness evidence

Especially because it suggests that some of the groundswell of anti-Google sentiment in Washington may have been driven by secret paid attack-campaigns like this one.

FORBES: PR Firm's Attack On Google Goes Very, Very Badly