Warning! Spoilers ahead for Daredevil #28
In the latest issue of Marvel Comics' by serving a prison sentence is inherently unattainable by its very nature. As such, Daredevil's current incarceration has resulted in much more than Matt Murdock bargained for, and it may very well break him as his imprisonment continues in Daredevil #28 from writer Chip Zadarsky with art by Marco Checchetto.
On the one hand, Daredevil is right to feel guilty for his lack of control that lead to the unintentional homicide of a mere liquor store thief. Murdock returned to vigilante work too soon after taking time off for his body to heal and recuperate, and as such he wasn't fully in control in a normally simple brawl he should have easily handled. As a result, he inadvertently compensated by being too aggressive. Over time, Matt determined that the right thing to do was to turn himself in once he cut a deal to be tried without his secret identity being revealed, and secured a new replacement Daredevil to keep Hell's Kitchen safe in the form of Elektra Natchios.
However, Matt Murdock has begun to realize that the point he's trying to make to criminals, the public, and other vigilantes just doesn't work at its core. Because he broke the laws, he wants to show that not even vigilantes like himself are above them. However, Daredevil #28 sees Matt speaking with the prison's therapist, and she points out the problem with Daredevil's choice to turn himself in and be incarcerated: it was his choice.
While Daredevil initially disagrees, he starts to realize how right the therapist really is as time goes on. Even a fellow inmate tells him that serving his sentence is a fantasy. Likewise, another inmate tries to make friends with Matt, and Murdock rejects him (though he did protect him from a gang later on). This same inmate that was attacked later committed suicide, leading to an enormous amount of guilt on Murdock's part. However, it wasn't just because he ignored him, but also because it was Matt who prosecuted him as a lawyer and was responsible for his imprisonment in the first place.
Taking all of this, combined with the brutality he's witnessing along with the corrupt guards and warden, Matt realizes the levels of inequality within the justice system that he had seemingly been ignoring while on the outside. His fellow inmates had no choice but to be sent there, while he made the choice to come. As such, he can never truly prove that he's not above them as he can never be equal to them to begin with. That being said, it looks as though Daredevil's mission while in prison is going to have to change as his series continues from Marvel Comics.