juvenile justice

Conan Zamolo, a former youth justice officer at Don Dale youth detention centre, has admitted he filmed himself bursting into a cell and repeatedly asking the boys in their beds to give him oral sex.

He was giving evidence to the Royal Commission into the Protection and Detention of Children in the Northern Territory.

Zomolo said he was "goofing around" in the videos and had a "good relationship with the kids".

Zamolo also admitted to the hearing he had filmed children being forced to eat bird faeces and posted the footage on social media site Snapchat.

Dylan Voller joined a small crowd protesting against the conditions in NT detention centres as the Royal Commission into Juvenile Justice resumed hearings in Alice Springs on March 13.

Footage broadcast on the ABC showing Voller being tear-gassed, spit-hooded and shackled to a restraint chair prompted Prime Minister Malcolm Turnbull to call the inquiry.

Speaking outside the commission, Voller said he wanted to support the other young people giving evidence.