The fourth day of the Parliament Winter Session saw a protest outside the premises when the Opposition MPs in front of Makar Dwar on Parliament premises staged a protest against the Centre over air pollution in Delhi-NCR and parts of North India.

As reported by news agency ANI, opposition MPs were seen wearing an oxygen mask and holding a banner to take a jibe at Prime Minister Narendra Modi, which read "Mausam ka maza lijiye" (enjoy the weather).