1. May 1 has been celebrated as Labor Day in Idaho since 1890: The first statewide Labor Day celebration was held in Boise in 1890, and May 1 has been recognized as Labor Day in Idaho ever since. The day recognizes the contributions of workers to society and celebrates the achievements of the labor movement.

2. May 1 is also celebrated as Law Day in Idaho: In addition to being Labor Day, May 1 is recognized as Law Day in Idaho. This day celebrates the role of the law in the United States and recognizes its importance in maintaining a democratic society.

3. A major wildfire broke out in Idaho on May 1, 1910: Known as the "Big Blowup," this wildfire burned over three million acres of forest in Idaho and Montana. It remains the largest wildfire in United States history.

4. May 1, 1932 was the date of a major labor dispute in Boise: On May 1, 1932, a group of striking flour mill workers clashed with police in Boise. The dispute led to bloodshed and five people were killed in the violence.

5. May 1, 2005 was the date of the "Idaho Freedom Walk": On May 1, 2005, a group of activists in Boise organized the "Idaho Freedom Walk," a demonstration in support of civil liberties and opposition to the USA PATRIOT Act. The event drew hundreds of participants and was one of many similar demonstrations held around the country.