Could the US Marshals be what the movie poster #4 is eluding to? Guardians of the Pedophiles. (Just a thought). Since they deputized thousands of National Guard troops?
The U.S. Marshals Service is responsible for the safe and humane custody of more than 220,000 federal prisoners, beginning at the time of arrest and ending when prisoners are acquitted, arrive at a designated Federal Bureau of Prisons facility to serve a sentence or are otherwise ordered released from Marshals custody.
You might be right. Guardians of the Galaxy were the ones protecting the galaxy, so guardians of the pedos could be their protectors only in this movie, the “guardians” are the villains.