In 2003 the organisation performed a violent attack against the Gay pride-festival in Stockholm, where they began throwing bottles and beating the participators of the parade, this later resulted in the imprisonment of the chairman Marc Abramsson on the terms of battery and rioting.

NDU now suffered from internal conflicts and started a period of reconstruction when Andreas Wallentin replaced the leadership.

A year later he resigned to have time for studies and to work as a writer for the party's newspaper Nationell Idag (National Today).

Robert Almgren took over and continued the reformation, leading it out of all the setbacks and making it a prominent and rapid-growing youth organisation again, creating new divisions all over the country.

In consultation between the chairman and the council the political manifesto and stance in factual matters was decided, in accordance with the parent party's ideological guidelines.