So then, you were not really all that lost at "hello."
Most words have multiple meanings, resulting in ambiguity in certain contexts.
You had asked me originally if the poster went on to say much of interest.
The photo link simply displays the poster itself, plain for all to see, and it makes one statement about drugs and a second statement about shoplifting. So, surely you were not asking me what else is said on the poster (placard, sign.) Therefore, you must have assumed that the photo of the placard was part of some article posted by some poster, and you were inquiring into what else that article might have said, with regard to drugs, or shoplifting, or prison.
Since the Internet is a multicultural, multilingual meeting place for people of all ages, there may be some who do not understand the humor (or the tragedy) of the placard in the photo.
Some readers may not realize what the term "butt hole" means.
Milan Kundera was quite clever and delicate, in one of his novels, when he said that a man, making love, became inflamed when he caught sight of "the eye of the rump."
It is poetic to call things by some euphemism, such as an eye, or a rose (Annie Proulx's expression "stemming the rose").
Others may be well aware of the meaning of "butt hole", but may be ignorant of what allegedly happens to some prisoners.
Now, as to justice being political, why, if that were really the case, then we could not speak of the rules here forbidding the discussion of politics, since we would be speaking about the rules of this forum and the government of this forum, and the question of justice when this forum enforces the rules. We would find ourselves in the curious bind of breaking the rules whenever we attempt to discuss the rules.
If we wanted to be clever and wicked, we might start a thread on The Shawshank Redemption, in the Fiction section, and a thread on OZ in the Television section, and then begin to discuss the injustice of prisons portrayed in that novel and that series. But then we would be adhering to the letter of the law, but not the spirit (oops that phrase in itself teeters upon the religious). To do such a thing might be a form of legal injustice. I am not suggesting that such a thread be started, but I am just playing around with the ambiguous nature of words and language.
Now, blindness sounds pejorative, yet statues of Madam (or Mademoiselle) Justice (let us presume her virginity), are BLINDFOLDED, but not blind (there is a difference) because Justice, though fully sighted, is suppose to treat all alike on their day in court, and not be a "respecter of persons".