What rights might we have that are largely considered basic human rights, whether they are currently exercised or constrained in our society? Global bodies like the United Nations have spelled some out especially for groups that have historically been left out including the Rights of Indigenous Peoples, Disabled Persons, and Children. Specific participatory rights have also been noted by area of interest, e.g., in decisions regarding the environment. These rights are also sometimes considered as rights to assembly, to petition, to associate, and to vote. See also guide to the broader topic of "Human Rights".
Convention on the Rights of Persons with Disabilities - See particularly Article 29 "Participation in Political and Public Life".
Rio Declaration on the Environment and Development - from the 1992 Earth Summit, see especially Principle 10 "Public Participation" in decisions regarding the environment
UN Convention on Rights of the Child - a fact sheet that illuminates rights of children to participate in decisions.
Active citizenship is an umbrella concept that looks at the rights and responsibilities of citizens, regardless of the place they call home. Activities can be local or global in focus. Keywords include citizenship, participatory rights, engagement, activism, civil society, volunteerism, grassroots, etc. This page pays some attention to theory, but more to case studies, approaches, tools across political, social, economic, and environmental spheres of society.
Whether looking for scholarly articles, case studies, recent news, or simply the insights of activists, there are numerous tools to use. Below is a short targeted list, but if you aren't finding what you need, consult with a librarian to assist your research.