Swierczek began his political career as a member of the Young National Democratic Party of Germany (NPD).
[1] He was one of the leaders of the Freien Nationalisten before taking over the leadership of the Munich Kameradschaft of the Action Front of National Socialists/National Activists (ANS/NA).
Swierczek then threw his lot in with the Free German Workers' Party (FAP), serving that group as both Vice General Secretary and chair of the FAP-Landesverbandes Bayern.
[2] Swierczek split from the FAP in 1990 and formed his own group, National Offensive, in Augsburg on 3 July.
After attempting to reconvene the ANS/NA he was tried before the Stuttgart regional court and, on 7 May 1995, was sentenced to 15 months imprisonment for trying to restart this banned group.