Around the turn of the 20th Century, Helena High School had a tradition called "The Senior-Junior Fight". It was a bloody and destructive springtime affair, the object of which was for the juniors to take down and desecrate a senior-class flag, which seniors would run up a flagpole located between the High School and adjacent Central School.

The fighting got so bad that the School Board eventually had the flagpole removed from the grounds. The problem was that seniors in subsequent years simply ran their flag up the pole located atop the High School building, and the fight continued on the roof.

A crackdown came, and all aspects of the event were banned from the school grounds. This had the effect of spreading the conflict all over town, with a further escalation in violence and property damage.

Authorities tried organizing alternative senior-junior competitions over the years, including a baseball game, a tug-of-war and a wrestling match. These events were seen by students as being too tame and controlled.

There were other unauthorized student actrivities during those years, including "Sneak Day" in which truancy was widespread, and "Old Clothes Day", when students would wear ragged clothes stuffed with hay and straw. There was also "Costume Day", which was held only once, but likely furnished the basic idea for the Vigilante Parade.

In 1924, meetings between students and administrators set into motion a plan for the parade: a grand pageant of historical floats, involving almost every student in a creative competition, and having at its heart the theme of the tough pioneer spirit.

As former (1907-1933) HHS Principal Albert J. Roberts said in a 1939 Helena Independent story about the origins of the parade:

Because so many photographs of the parade have been taken over the decades, those presented here are necessarily limited to a representative sample. If you have good color photos from the 1940s-60s, or an unusually interesting parade photo, please let me know.