US Supreme Court ruled against quotas in university admissions
On June 28, 1978, the US Supreme Court ruled in Regents of the University of California v. Bakke that quota systems could not be used in university admissions, although programs giving advantage to minorities were constitutionally permissible.
Treaty of Versailles signed, ending WWI
On June 28, 1919, the Treaty of Versailles was signed, ending World War I.