Valve complied with a request from South Korea’s Game Rating and Administration Committee to locally block a Mount & Blade: Warband mod, after which it's author deleted it.
The Gwangju Uprising was a series of student-led pro-democratic demonstrations that took place in Korea in 1980. These protests are known to have been violently suppressed by the military, resulting in a massacre of civilians, but the mod depicted protesters as armed and violent criminals (according to YNA), thus framing the military regime’s brutality as justified. Additionally, the mod brandished the image of military dictator Chun Doo Hwan as its cover.
Sounds like the right thing to do.