India, Nov. 10 -- As Delhiites face toxic air quality for weeks now, scores of people protested at the iconic India Gate on Sunday evening amid high police deployment. Dozens of protesters were detained by the police as they said the people had gathered without prior permission.

While protesters claimed they had been threatened by the police with FIRs, videos on social media showed cops bundling people in police vehicles.

Wearing gas masks, holding Constitution copies and carrying children, protesters thronged the India Gate before detentions by police drew reactions from scores of people, politicians as well as civil society members, including environmental activists.

As protesters took over India Gate, Delhi environment minister Manj...