In this chapter, the Social Identity Theory (SIT) is combined with Q-methodology to scrutinise the differences and similarities between three groups under investigation: young participants in disadvantaged areas in The Hague (N = 41), educators at secondary schools in South Holland (N = 33), and representatives of the Hague Peace and Justice ecosystem (N = 10). They are investigated on their position on Sustainable Development Goal 16 (Peace, Justice, and Stable public institutions) and EU climate policies. For the sake of good governance, one of the goals of the Municipality of The Hague, there is a need to investigate whether different groups in the area have a shared understanding of these goals and policies. This study aims to assess how SDG 16, and EU climate policies are understood by these individuals in The Hague and South Holland. The findings uncover three distinct viewpoints: “sustainable peace”, “participatory peace”, and “equal and fair peace”. In our analysis, we discuss the differences in perception and values between the three viewpoints. We conclude with avenues for possible future research and policy recommendations.