Putting large quantities of aggressive people into confined areas does generally result in violence, yes.
Also, these two YouTube channels are by former prisoners, if you're looking for information from that perspective:
* https://www.youtube.com/channel/UCGPB2ZA4096SESz_VZVzHoA
* https://www.youtube.com/user/FreshOutSeries
Putting large quantities of aggressive people into confined areas does generally result in violence, yes.
Also, these two YouTube channels are by former prisoners, if you're looking for information from that perspective:
* https://www.youtube.com/channel/UCGPB2ZA4096SESz_VZVzHoA
* https://www.youtube.com/user/FreshOutSeries