Hollingsworth v. Perry was a landmark Supreme Court case decided in 2013 that addressed the constitutionality of California's Proposition 8, which banned same-sex marriage. The ruling effectively upheld a lower court's decision to strike down Proposition 8, thereby allowing same-sex marriages to resume in California. This case played a significant role in advancing LGBTQ+ rights and highlighted the ongoing struggle for marriage equality within the broader context of civil rights movements.