In many countries with history of colonization and occupation, Indigenous groups continue to suffer from non-representation, discrimination and injustice. A key solution for these groups to remain salient and relevant in public discourse may be at the grassroots level, where individual citizens, rather than the government, can take an active part in showing support for the Indigenous rights. In this paper we explore how difficult it could be to achieve this goal. We conduct a novel survey experiment in Taiwan, where the government has increasingly recognized Indigenous rights and promoted their culture. Our results show that informing citizens of Taiwan's generally positive stance towards multiculturalism and continuing plight of discriminated Indigenous population does help to increase the respondents' grassroots support for the Indigenous. We also find, however, that their support level remains tenuous and sensitive to events that promote solidarity among the citizens. In particular we look at the sovereignty threat coming from mainland China and find that when respondents are reminded of impending crisis, solidarity concerns appear to overshadow values of cultural diversity and Indigenous rights. Furthermore there is little evidence that respondents incorporate Taiwan's Indigenous culture as their own, even though doing so could potentially help to shape an identity that is distinct and unique from the Chinese counterpart.