His attack has sparked a debate over the "leadership" of Anonymous.

Howells' attack on Turner prize sparks fierce art debate.

This attack sparked huge demonstrations that seemed to unite large numbers of citizens from the usually fractured and sectarian Lebanese population.

The attack sparked violence in which three people were killed and 176 wounded.

That also happened in the summer of 2001, when attacks in Florida and a Time magazine cover on sharks sparked attention.

That attack sparked a wave of violence against the Jews all over Morocco.

His attack sparked a joint political statement by four other major religious denominations, which was shrugged off by the premier.

The attack on Centaur sparked widespread public outrage in Australia.

The attacks also sparked conspiracy theories about possible Israeli involvement.

That attack sparked the current war in Chechnya.