For their part, Sikh groups have agreed that it is legitimate to require those carrying daggers to secure the items in their checked luggage.

Sikh groups complained about the wrongful portrayal of Sikhs as extremists.

This led to Sikh groups wanting the film banned and "bitterly" opposing the film.

Attacks by Sikh secessionist groups have been responsible for dozens of killings a week.

Some Sikh groups had previously argued that the policy was exclusionary.

A Sikh militant group also claimed responsibility for the bomb attack on Tuesday.

Sikh groups seek an independent nation in the Punjab.

Anonymous callers said Sikh groups carried out the bombing.

No organization claimed responsibility for the bombing, but tonight the police said they suspected two Sikh groups.

In recent years, there have been several cases of Sikh groups protesting against the Sardarji jokes.