It’s a pretty rare event when a court invalidates a law for violating the Equal Protection clauses of either the Hawaii or U.S. Constitution under rational basis review. In Silva v. City & County of Honolulu, No. 27385 (Aug. 10, 2007), the Hawaii Supreme Court did just that, holding that Haw. Rev. Stat. § 46-72 was irrational, and violated the Hawaii Constitution. More here.