Overview:
A Prison Takeover is when you take down all the guards of whatever prison you are in before the timer runs out, get the note from the warden that the front door is unlocked, and get past the guards on the towers.
Walkthrough:
To begin, you should start by recruiting an ally/allies. It is possible to do it yourself, but having more people helping you will make it easier. Secondly, you must take down your first guard, and tie him up with duct tape or rope, then move him to wherever you want to hide him or just leave him there. Repeat with the remaining guards. Note after the 2nd guard is knocked out, (Number of guards that need to be knocked out depends on how many guards there are in that prison on Console) Lockdown will begin, starting from 98 seconds, you must take out the remaining guards before the clock runs out or you will go to solitary and lose all contraband.
Then, once all guards are down, you will receive a note from the warden saying "You've made your point" and telling you that the front door is open. You must pick up a guard (or else the tower guards will shoot you, but still do on Console) and walk out the front door and you have won.