Punjab Chief Minister Muhammad Shahbaz Sharif on Thursday appealed to Pakistan Muslim League-N (PML-N) workers and people to show tolerance and restraint in the face of the provocative activities of Tehreek-e-Insaf. The Chief Minister said: "he is grieved over Multan incident but it is a well known fact that PTI leadership and its supporters have been using extremely objectionable and abusive language over TV channels and in their public meetings and rallies.