Young, patriotic and ready to labour for the great leader. This is the inspiring image of North Korea's youth brigade that the state would like you to see, but human rights groups are calling it modern day slavery.

The youth brigade is made up of young college age students who often do dangerous work to carry out Kim Jong Un's vision.

The students more than 12 hours a day, without pay for up to 10 years. In return they get better chances at entering a university or into the ruling Worker's Party.