What is the name of the Star Trek episode where rioting is encouraged once a year?

I do not know any episode that “encourages” riots, but DS9 had the double-episode Past Tense, about riots caused by the killing of a black man by police, after years of massive economic inequality and oppression.

@ragingloli The episode where it is dangerous to be out side once a year. Where you could do what ever you want outside. It was a world in the 1920’s clothing. I will go over the list and update fluther.

@ragingloli The Return of the Archons
Wikipedia link

In the episode, the crew of the Enterprise visit a seemingly peaceful planet whose inhabitants are “of the Body”, are controlled by an unseen ruler, and enjoy a night of violence during “festival”.

Isn’t that every New Years Eve Party atmosphere?
Or every Bar fight night?

I think you are confusing ST with The Purge.

I thought “The Red Hour” was every day. Maybe at noon—don’t think it was midnight but it started at twelve,

The machine that controlled everybody was called Landreau. Evedently a real Landreau started a cult and built a machine.

The Return of the Archons was the name of the episode.

@ragingloli I know nothing of DS9 but after reading your link I am going to watch that episode. Those writers were clever.

I kind of vaguely recognize that…..