From 'leaflets to pepper spray', Parliament is no stranger to security breaches | 5 points

livemint.com:

ALSO READ: 'New Parliament building not configured well': Opposition hits out after major security lapse at Lok Sabha Some of those incidents are listed below: 1. On February 13, 2014, then Congress MP Lagadapati Rajagopal used pepper spray in Parliament, reportedly in a bid to stall the tabling of the Telangana Bill — the legislation to carve out Telangana from Andhra Pradesh. The "expelled Congress MP" had then claimed he did it in self-defence, the Indian Express had reported. 2. The late 1990s witnessed an incident similar to the one that happened on Wednesday.

The Deccan Herald quoted a Parliament official as saying that in late 1990, a protester jumped into the Lok Sabha chamber with a demand for a separate Uttarakhand state. He was held and handed over to the police later. ALSO READ: Parliament security breach: Who are the six accused? What govt planning next? | Top 10 updates 3. The Deccan Herald report also mentioned another incident that happened in November 2016 when a Madhya Pradesh man made an attempt to jump into the Lok Sabha but was soon overpowered by the security staff.

4. On December 21, 1967, when the Rajya Sabha, a person in the visitors' gallery shouted slogans and threw some leaflets on the floor of the House. He was immediately removed from the visitors' gallery by the Watch and Ward Staff.