1. May Day 1905 marked the first International Workers’ Day celebration in Oregon. It was celebrated in Portland, and over 5,000 people marched from Union Station to what is now Tom McCall Waterfront Park.

2. May 1, 1969, was the day that Oregon became the first state in the United States to implement the Bottle Bill. The law required a 5 cent deposit on glass bottles and cans, and was designed to reduce litter and increase recycling rates.

3. On May 1, 2005, Oregon became the second state in the United States to legalize physician-assisted suicide. The law, known as the Death with Dignity Act, allows terminally ill patients with less than six months to live to obtain lethal prescriptions to end their lives.

4. May 1, 1859, was the day that Oregon was admitted to the Union as the 33rd state. The decision was controversial at the time, as lawmakers were split on whether or not to allow slavery in the new state.

5. May Day 1970 was marked by a student protest at Portland State University, during which students occupied and shut down the administration building for several days. The protest was part of a larger nationwide movement opposing the Vietnam War and demanding greater campus democracy.