In Roe v. Wade, the U.S. Supreme Court ruled unduly restrictive state regulation of abortion as unconstitutional, arguing that it violated women’s constitutional right of privacy. Roe v. Wade was overturned by the Supreme Court in 2022.
Other notable events on January 22nd:
In 1970, the Pan Am jumbo jet (Boeing 747) takes off on its first scheduled flight from New York to London.
In 1963, Germany and France formally reconcile through the the Élysée Treaty, which ended centuries of enmity between the two countries.
In 1943, the fastest temperature change in world history is recorded in Spearfish, South Dakota, with the temperature increasing from −20°C  to 7°C in the span of two minutes.
In 1905, Peaceful demonstrators in St. Petersburg are massacred by Russian troops (Bloody Sunday) in the advent of the violent phase of the Russian Revolution of 1905.

Norma McCorvey (Jane Roe) and her lawyer Gloria Allred on the steps of the Supreme Court, 1989