Inspired by Hindutva ideology during his college days in 1997, he joined the Akhil Bharatiya Vidyarthi Parishad,[10] and later the Rashtriya Swayamsevak Sangh.

He has practiced law for at least 15 years also serving as the Standing Counsel to the Government of India at Madras High Court.

[16][17] Murugan later resigned his post in the NCSC before one year of his term's end and met senior BJP leaders.

[20] Murugan attempted to lead the BJP's Vel Yatra twice in 2020 to build support for Hindutva politics in Tamil Nadu, but was arrested both times.

[24] Chief Minister of Puducherry V Narayanasamy said Vel yatra is a move by BJP to foment communal disharmony.

[30] Murugan claimed there were "vested interests" behind the 2020–2021 Indian farmers' protest in northern states in October 2021.