Delhi Chief Minister Arvind Kejriwal on Wednesday advised Prime Minister Narendra Modi to unfollow those who threaten and abuse women on social media."Happy Women's Day to all. On this day, I urge the Prime Minister to unfollow all those who abuse and threaten women and (urge) take strong action against them," Kejriwal said in a tweet to mark the International Women's Day.Earlier in the day, Modi, in his message on the occasion, saluted the indomitable spirit, determination and dedication of women.