Massimiliano della Rovere
A strawman attack in the other Pax games was an attack on yourself with the objective of earning a Prestige point for yourself because you could give players Prestige by playing take-that cards on them, but you would earn the Prestige if you played it on yourself.
Thematically this meant that you could attack one of your own ranches, convince them it was somebody else doing the dirty work, and then Outrage them into supporting you. That's a Strawman Attack, thematically speaking: doing something awful and convincing the wronged party that somebody else did it, so lets get'em.
In Pax Ren, I believe they lost the thematic reasoning behind it, but retained the jargon so that it would be easy for returning Pax players to recognize the mechanic.
So in game terms the "strawman"-ed items are the Tokens that will be conviced to attack the current Regime using the One-Shot or Operation.
Thank you, Aaron!