From the inside
The best way to bring down any system? From the inside, that's what the government has been doing for years. They infiltrated the civil rights movement, panthers, 9/11 truth, etc. They have also done this with gangs, mafia, etc. Often they put their people on the inside and use them to destroy these organization, set people up, etc.
That is also why they want to join these conspiracy, extremist, and other forums. They plan, manipulate and work for years to get into positions of power and authority. They do this in society too, judges, lawyers, politicians, they get in and further advance people like themselves, (corrupted, immoral, deceitful, etc) and suddenly they are in charge. The innocent get mobbed out of these jobs, and what's left is an organization with the corrupt, obedient, or those who just don't ask questions, or maybe with a few who are too afraid to.
Well the interesting thing is this concept can work, and eventually will work with this system one way or another. Two things can happen with a sytem like this, if the people could ever effectively wake up, realise there is something wrong, they would have the power to change it. If they unanomously got together, realised that things are wrong, then from the inside they could bring in down, sabotage the system the same way they do to other groups and organizations.
The other method is an eventuality. They destroy themselves because they get so immoral, so corrupted, so debased, that all that is left are the stupid, immoral and corrupted. People of independent thought are often long gone by this time, and what is left eventually like what we saw in the movie apacalypto destroyes itself from the inside.
One process is what we might call revolution, this is a process that they fear. That the people will wake up, stop believing the propaganda, stop believing the lies. Get past all the lies they have been sold to keep them seperate, these lies that keep you seperate are part of their control structure, till you can overcome these, your chances are much more limited.
Revolution can come by bloody battles, it come come by peaceful protest, it can come by popular sentiment, but it can happen if a people truly wake up, feel that something is wrong, and decide to do something about it. Most people try to make revolution happen at the voting booth every few years, but if all parties are the same, or working for the same side, then revolution can not truly be fascilitated this way.
If revolution fails, and the people remain silent, then an eventuality of tyranny almost always happens. Then the people suffer, the good are destroyed, and freedoms are suppressed. However a society like this eventually eats itself from the inside, however this process is much slower, and it usually involves the systemic destruction of the innocent, the independent thinkers, dissidents, etc.
A society as a whole has great power to decide their fate and the change the course of their lives for the better, they can choose a future of enslavement, or they can sit down, realistically look at the problem, and start to believe and realise that they have the power, they have the capacity to make a change for the better, and then start to go about making those changes.
A desire for change, getting past fear, awakening of society, organizing, and eventually action of some kind are all keep factors in starting to make that change happen, if society wants the first outcome vs the last.
This system already has people on the inside that can make a difference. If you can wake up, realise this system is broken and corrupted, you can make a change for the better. There is still time, and more importantly, the members of the society, have the capacity, and the people have the power to bring about this change.
I think taking an it starts with me attitude is key, but people have been down for so long, it takes a lot to change behaviour patterns and enslaved thinking patterns, we have in ways gotten lazy, many want change, but change is scary, and also many are just comfortable enough, but we know that if things are allowed to continue this way, it will eventually get very uncomfortable for those who value any sort of freedom, or independent thought. Interestingly enough thought is the key, we have the capacity to change the world for the better, but we have to desire that, believe that, and work towards that, otherwise this corrupted system will destroy itself, but before it does, it will take a lot of innocent people with it in the process.