As European societies become continuously more diverse, understanding the dynamics of minority rights endorsement becomes increasingly crucial. This paper investigates the variations in citizen support for minority rights and how these endorsements differ across various minority groups and purposes. This study focuses on minority organized supplementary schooling for minoritized youth in Flanders, Belgium, as a case study for examining the endorsement of rights. In study 1, we investigate which characteristics of natives predict support for minority-organized schooling. In Study 2 we conduct a survey experiment to unravel what explains public opposition to certain minority-organized, but not others. Specifically, we examine the causal effect the organizing ethnic community (i.e., Italian, Chinese, or Moroccan) and the stated purpose (i.e., heritage language training or math tutoring) of the school on public support. The study reveals that public approval of such minority-organized spaces is not uniform. It is influenced by the perceived cultural threat posed by specific minority groups and the nature of the initiative. This research is the first to comprehensively examine public perceptions of minority-organized spaced. The findings indicate that deeper research into the support for minority rights and freedoms is imperative.