I've been thinking: Heath Ledger is dead, but the Joker isn't, right? So what is the Joker doing during the events of this movie? Since presumably the Joker is put in jail,
Spoiler
doesn't Bane's jailbreak mean that the Joker is loose on the streets for the latter half of the movie? 

Spoiler
Not just the inmates were a corrupt bunch. Corruption was also festering in the elite and the higher authorities. They were also corrupt in the eyes of the League. Bane, releasing the prisoners and watching as the city gladly accepted his idea of a "Revolution". simple waited to push the button to get rid of everyone.
Not just the inmates were a corrupt bunch. Corruption was also festering in the elite and the higher authorities. They were also corrupt in the eyes of the League. Bane, releasing the prisoners and watching as the city gladly accepted his idea of a "Revolution". simple waited to push the button to get rid of everyone.
Spoiler
Did the city actually gladly accept it? Yeah, we see some looting, but we also see a bunch of normal people squatting in one of the scenes, presumably homeless. Only Catwoman is happy with the revolution, but even she kind of changes her mind in the end. I don't see Bane as having a legitimate, sincere point at all. All the 'take back your city' stuff was explicitly just to torture Batman as revenge, not out of any real sense of social justice.
Firstly; all films want to be meaningful, I don't see how that can possibly be a criticism in its own right. All films have a "social-political subtext", or at least an agenda.
Secondly... I'm a bit unsure about what you mean. Are you suggesting that the film was supposed to be advocating "equality" as a social-political goal? Because I think you're wrong.
Spoiler
Bane offered equality to the people of Gotham, but really it was just a front for the nihilistic tendencies of the League of Shadows. Even if you take that part out of the equation, the "revolution" of Gotham (which had obvious parallels to the French revolution) and the revolutionary government that followed (which had even more obvious parallels to the USSR under Stalin) were just masks for the corrupt and mad to terrorise "normal people". The only major character who ever seems to truly believe in the revolution is Anne Hathaway's, and she changes her mind by the end.
So if anything, I think the film seemed to be implying that "equality" is an ideal not to be trusted.
Bane offered equality to the people of Gotham, but really it was just a front for the nihilistic tendencies of the League of Shadows. Even if you take that part out of the equation, the "revolution" of Gotham (which had obvious parallels to the French revolution) and the revolutionary government that followed (which had even more obvious parallels to the USSR under Stalin) were just masks for the corrupt and mad to terrorise "normal people". The only major character who ever seems to truly believe in the revolution is Anne Hathaway's, and she changes her mind by the end.
So if anything, I think the film seemed to be implying that "equality" is an ideal not to be trusted.
Spoiler
Agreed! It is definitely a smokescreen and not particularly sincere (as we find out). If anything I would say that TDKR has a distinctly right-wing, conservative take on things - the 'trials' are clearly sham trials and are led by a mad criminal who once tried to crazy-gas the whole city, the McGuffin is weaponized from "clean renewable energy", and it's still rather paternalistic in that in the end it's still one of the 1% who sacrifices himself to saves Gotham.
However, a lot of people on the Internet I've read so far seem to be taking Bane's supposed philosophy seriously.
However, a lot of people on the Internet I've read so far seem to be taking Bane's supposed philosophy seriously.