> Also god damn I hate this supreme court for overruling their own decisions. Even the ones I would personally benefit from. This is going to ruin the court in the long run for partisan bullshit. If going to the court twice for the same issue can get you different decisions then the ruling of the court means absolutely fucking nothing. You might as well just continue your affirmative action program because the next time the court makeup might be different and they'll change their mind again.
> This was already decided forty years ago
If the US Supreme Court never overturned its decisions, these decisions would still be in force:
- laws criminalising private consensual same-sex activity are constitutional (Bowers v Hardwick, 1986–overturned by Lawrence v Texas in 2003)
- miscegenation laws do not violate the 14th Amendment (Pace v Alambama, 1883–overturned in part by McLaughlin v Florida in 1964 and fully by Loving v Virginia in 1967)
- legally enforced racial segregation does not violate the 14th Amendment (Plessy v Ferguson, 1896–effectively overturned by Brown v Board of Education in 1954)
- racial segregation in public schools is constitutional (Cumming v Richmond County Board of Education, 1899–also overturned by Brown v Board of Education)
- states have the constitutional right to ban racially integrated private educational institutions (Berea College v Kentucky, 1908–also overturned by Brown v Board of Education)
- it is constitutional to execute juvenile offenders who were 16 or 17 at the time of their crime (Stanford v Kentucky, 1989–overturned by Roper v Simmons, 2005)
- it is constitutional to execute the intellectually disabled (Penry v Lynaugh, 1989–overturned by Atkins v Virginia in 2002)
- it is constitutional for public schools to force students to salute the flag and recite the Pledge of Allegiance, even if they have a religious objection to doing so (Minersville School District v Gobitis, 1940–overturned a mere three years later by West Virginia State Board of Education v Barnette, 1943)
- labor laws which impose limits on working hours are unconstitutional (Lochner v New York, 1905–never explicitly overturned, although a series of 1930s decisions effectively did so)
- minimum wage laws are unconstitutional (Adkins v Children's Hospital, 1923–overturned by West Coast Hotel Co. v Parrish, 1937)
- child labor laws violate children's constitutional right to work (Hammer v Dagenhart, 1918, and Bailey v Drexel Furniture Co, 1922–overturned by United States v Darby Lumber Co, 1941)
If the principle "the Supreme Court should never overturn its past decisions" was accepted–the US would be a very different country today. Even if you only want to apply that principle to "established precedent" – Pace v Alabama was law for over 80 years, so if that principle was seriously followed, interracial marriage bans might well still exist in the US today.