A march against Khalistani elements in Punjab's Patiala took a violent turn today. Clashes erupted when Shiv Sena (Bal Thackeray) group came face to face with a Sikh group that is believed to be pro-Khalistan. The 2 groups pelted stones and brandished swords in broad daylight. The police had to fire in the air to bring the situation under control. 2 people were injured in the violent clash. Curfew has now been imposed in Patiala till Saturday. Watch this video for more,