When the Centre passed the Citizenship (Amendment) Act, 2019, he started campaigning against it and in this regard, he addressed a gathering of 600 students in Aligarh Muslim University on December 12, 2019. The college campus witnessed violence on December 15. Local police blamed his speech and lodged an FIR against him for inciting students for communal violence. However, the police arrested him 46 days after the incident on January 29, 2020, when he was about to address a gathering in Mumbai. When the local court granted him bail on February 10, he was still kept in detention for three days. When the court again ordered the police to release him on February 13, he was re-arrested under the National Security Act (NSA) on February 14.