I love op mc mangas man I need all the self-insertion material I can get

What happens in that case? In a world where Jin-Jo can't even seek a fair trial and the ones who commit such deeds manage to get away scot-free, how else are you supposed to seek justice? Unfortunately, the answer will have to be personal vengeance, because clearly, the ones in charge are either all corrupt or simply failing at their duties. And so that's exactly what Jin-Jo does. He takes it upon himself to seek revenge since the ones who should simply won't.

The main problem is that Jin-Jo's revenge is mass murder, which isn't a form of justice but rather a way to relinquish his anguish and grief. Murder doesn't seek justice, it is purely driven by one's emotions. The second problem is that not every single individual in the Black Dragon Squad is part of the corruption, as is evidenced by the 2 survivors claiming to not even know who Soso is. That means that there are most likely innocent people among the ones Jin-Jo has killed; people who probably have their own families, kids, etc, and have done nothing wrong. This second point alone is more than enough of a reason as to why Jin-Jo's revenge is wrong.

So clearly, murder for revenge is not the way to go. But then what should Jin-Jo do? If the corrupt individuals are left as is, that corruption will simply spread and many more innocent people will be hurt and even killed, as has already happened with Soso. In comparison to that, isn't rooting out the corrupt individuals and eliminating them much better than letting the lives of many innocent civilians go to ruin because of such corruption? Honestly, if Jin-Jo managed to pinpoint each corrupt individual and only exacted his vengeance on them, I would probably be cheering him on. But even that would have its consequences because as established in this chapter, despite the corruption, the Black Dragon Squad is still the sole reason behind the prosperity of Yeomho Fortress. If individuals in said organization started getting plucked out, it may cause chaos within the region and lead to increased crime rates and whatnot.

All this poses the question: What is the ideal situation here? What course of action should be taken that can be seen as humane, justifiable, and not lead to any consequences? When leaving such corruption to spread and taking action against such corruption both have their consequences, what exactly should be done?

I've been thinking about this for quite some time. While mass murder for the sake of personal revenge can't be justified, in this case specifically, I think it's more complicated than it seems. In the real world, you'd use the justice system and a fair trial to punish the ones who protected their duties. However, The Black Dragon Squad here is a major figure of authority, one of which seems to have quite significant corruption already. They act pretty much like the government in their region.

Again, in the real world, you'd seek a fair trial. But I've always wondered how you expect characters in these sorts of Murim stories to seek fair trials. I've read so many of these stories, and time and time again, it's constantly shown that the ones who have authority are either those at the top of their martial arts skills or those belonging to significantly important groups. Strength and power dictate authority and law in these series, no matter how evil or corrupt the authority figure may be, because how is one supposed to stand against a martial artist if they're one of the strongest in the verse? So in turn, how could one reasonably seek a proper and just trial, especially if the trial is supposed to be against a figure in one of these categories? The answer is that they can't. Unless they are just as powerful or more so than whoever they're against, justice will rarely be seen taking place in these stories.

That leads me to this story. Holding the individuals inside the Black Dragon Squad liable for their negligence and failure to adhere to their duties is pretty much impossible unless one of the higher-ups within the organization is not corrupt and holds them accountable. But I'm fairly certain it's been implied in this story that those key figures in the Black Dragon Squad are also corrupt, which is why this all happened in the first place, and so no one is going to hold anyone accountable.