He stated he wanted "to realize justice through politics", and announced his candidacy for the 2016 parliamentary election.

[3] He decided not to run for reelection on the 21st National Assembly elections, instead opening the Pyo Chang-won Institute of Crime Science while also hosting a radio show at MBC and current affairs program Scandal Supervisor on JTBC (although he left in December 2020).

[6] On November 28, 2016, Pyo made a remark on his political opposition of having the mind of a group rapist, based on neutralization theory.

[7][8] Several days later on December 15, 2016, Pyo commented on TV that supporters of Park Geun-hye have similar minds as group rapists.

[13] On January 20, 2017, Pyo hosted a galleria at the parliament which included artworks satirizing Park.