You just risked your life to get Falconer across town.
Falconer (who up until now you assumed was guilty) explains why his enemies in the government framed him for treason and want him killed: He knows their plans.
They're going to instigate riots in several cities simultaneously, and then use these riots as an excuse to declare martial law. Once martial law is declared, they'll use the "state of emergency" as a reason to round up all their opponents and have them imprisoned or killed.
You give yourself the mission to search out corroborating evidence, which you find. Falconer was telling the truth.
So now you're off on a mission to locate the compound where the secret plans to instigate a national state of emergency are hidden. This compound is the base from which the entire conspiracy is organized.
You need to find the compound and retrieve those written plans the "smoking gun" so you can bring them to the press and expose the conspiracy.
One minor setback: You don't know the location of the compound. You know someone who does, however, and that's your "friend," McCully, who earlier betrayed you. So you set off to capture him.
It's worth reiterating: Weak dialogue can undo the best Emotioneering, and most game dialogue is very weak. Weak dialogue from the rookie could make the preceding situation hokey and undo the effectiveness of this quite useful Self Toward NPC Chemistry Technique.
One of your men, a young rookie, volunteers to help you. He joined the force to "Serve and Protect," and he believes in those ideals. The notion of police being used as a tool for those who would abuse power is more than he can take.
So he joins you on this next mission. What you two have in common, of course, is your similar feelings about what's right and wrong.