system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Trek] Is the holodeck ever used to simulate programs similar to the violent video-games of the 21st-Century?

I've been reading up on my early 21st-Century history, and I've noticed that one of their past-times bears some similarity to the programs we run on our holodecks. However, the most popular of these "video-games" are very violent - far more violent and graphic than any holodeck simulation I've encountered. Some appear to glorify warfare and brutality, and some even have the user playing the part of a homicidal, amoral criminal.

It's hard for me to imagine that a Starfleet ship's computer would run a simulation program that encouraged wanton, egregious violence against fellow sentient beings. And if these programs are being run, how does Starfleet react to those who enjoy such pursuits? Surely a visit to the ship's counselor would be in order?
gpt
Worf had some training programs which were basically hand to hand combat that escalated in danger, violence and intensity.

On Voyager, the ship was hijacked by a violent, militaristic race that liked playing violent wargames on the holodeck so much that they converted the entire ship into a holodeck. They simulated WWII non stop, 24 hours a day, playing the part of the Nazis while the crew played the allies.