ISLAMABAD  - Police have intensified crackdown against anti-social elements by arresting 11 persons involved in displaying weapons and resorting to aerial firing besides posting videos on social media, informed a police spokesman on Saturday. The crackdown against the anti-social elements had been launched on special directions of Inspector General of Police (IGP) Islamabad Qazi Jamil Ur Rehman, he said. According to him, Inspector General Police (IGP) Islamabad Qazi Jamil ur Rehman has directed a full-scale crackdown against those involved in aerial firing and display of weapons especially on social media.