Constitution of Kenya
258. Enforcement of this Constitution
(1) Every person has the right to institute court proceedings, claiming that this Constitution has been contravened, or is threatened with contravention.
(2) In addition to a person acting in their own interest, court proceedings under clause (1) may be instituted by--
(a) a person acting on behalf of another person who cannot act in their own name;
(b) a person acting as a member of, or in the interest of, a group or class of persons;
(c) a person acting in the public interest; or
(d) an association acting in the interest of one or more of its members.