A United Nations figure wants to shine the spotlight on human rights by joining a legal challenge against controversial anti-protest laws. A United Nations special rapporteur with a focus on protecting human rights after terrorism events has sought to intervene in the case. He also flagged that if NSW Police decided not to extend the protest ban, his client might argue the case has no utility and should be dismissed. (Dominic Lorrimer)Blak Caucus, Palestine Action Group and Jews Against the Occupation '48, are the groups behind the constitutional challenge. Palestine Action Group spokesman Josh Lees said earlier in January that they would defy the law and continue protesting.