Being a member and MLA of AAP, he was supporting, sharing stage events for the BJP and was also campaigning against his own party in the 2019 Indian general election.
He protested against the cases of corruption in Commonwealth Games 2010 held in New Delhi and has written a pamphlet "It's Common v/s Wealth" highlighting the various scams and social and environmental concerns related with CWG 2010.
[17][18][19] He raised his voice and filed a Public Interest Litigation (PIL) in Supreme Court for adequate compensation for Vishnu Tiwari, a falsely accused rape convict who was declared innocent after spending 20 years in jail under the SC/ST Act.
Later submitted documents to the Anti-Corruption Branch (ACB) to back his allegations that Delhi CM Arvind Kejriwal delayed the probe into a Rs.400 crore tanker scam.
[21] Kapil Mishra was suspended from the party’s primary membership a day after he leveled corruption charges against Arvind Kejriwal and his former cabinet colleague Satyendra Kumar Jain.
A show-cause notice was issued to Mishra by the Delhi poll authorities for "violation of the model code of conduct and the Representation of the People Act".
[28][29][30][31] On 23 February 2020, Mishra publicly spoke out in a rally against the anti-CAA protesters, in the presence of the DCP of North East Delhi district, Ved Prakash Surya.
[a] Mishra tried to intimidate the police to remove the protesters from Jaffrabad and Chand Bagh areas in three days' time, allegedly threatening to take matters into his own hands, "hit the streets" and "not remain peaceful" in the event of their failure.
[36] BJP's East Delhi MP, Gautam Gambhir, on 25 February stated that "Kapil Mishra's speech is not acceptable" and asked for strict action to be taken against the people responsible for violence, regardless of which political party they belonged to.
The court then asked the police to take "conscious decision" while filing cases related to the hate speeches made by the three BJP leaders Kapil Mishra, Anurag Thakur and Parvesh Verma.