What are some of the most controversial moments from the Oscars?

During Oscars 1974, Robert Opel ran naked on stage during live broadcast. After winning for 'Girl, Interrupted', Angelina Jolie kissed her brother on the red carpet in 2000. In 2017, presenters mistakenly announced 'La La Land' as Best Picture instead of 'Moonlight' due to envelope error. Will Smith slapped Chris Rock in 2022 after he joked about Jada Pinkett Smith.