The People's Lobby occupies part of the state capitol while demonstrating for a depression relief bill. Two hundred protestors heckle legislators and spend the night in the senate chamber.

Dr. Martin Luther King Jr. criticizes US involvement in the Vietnam War during a speech at the University of Minnesota's St. Paul campus.

KSTP-TV makes the first commercial television broadcast in Minnesota, showing the Minneapolis Millers' baseball game from Nicollet Park for the approximately 2,500 owners of television sets in the Twin Cities. Station owner Stanley E. Hubbard had experimented with television since the 1930s.

The Minnesota Asian American Project (MAAP), an organization that promotes civil rights, affirmative action, and legal services for the Asian community, is officially incorporated by Dennis Tachiki, Gloria Kumagai, and Daniel Matsumoto.

The St. Paul Academy of Natural Sciences is formed. The group suspended activities after the state capitol fire of 1881 destroyed its collection, reorganized in 1890, and handed over its new collection to the St. Paul Institute of Science and Letters in 1907. The institute evolved into the Science Museum of Minnesota.

Pine City records a high temperature of 108 degrees.

Melvin Calvin is born in St. Paul. Working as a biochemist decades later, Calvin discovered the details of the photosynthesis process, and was awarded a Nobel Prize in Chemistry in 1961.

A warrant is issued for the arrest of Joseph Friedman, operator of the Tower Theater in St. Paul, where he had shown clips of the Dempsey-Gibbons boxing match. Tommy Gibbons, a St. Paulite who later became Ramsey County sheriff, went fifteen rounds with heavyweight champion Jack Dempsey in Montana on July 4, 1923. Because boxing was illegal in some states at this time, interstate shipment of such pictures was outlawed, and Friedman would be charged with "receiving and exhibiting fight films in violation of Federal law."

In Washington, D.C., the Bois Forte Ojibwe sign a treaty ceding their lands in St. Louis and Koochiching Counties and establishing the Nett Lake Reservation.

The St. Paul post office is established in Henry Jackson's store.