I hesitate to post on this thread, not being an expert in mental health. However, I think that you are still logical on one level whilst being very sick on another.
I feel that you are confusing a very reasonable crusade against the outrageous treatment that you suffered and where you can and want to go from this point onwards. Your thoughts are rational but they are based on irrational assumptions. You may well be suffering from PTSD but what is clear is that you have an irregular sleep cycle, suicidal thoughts and are not looking after yourself or your immediate environment. You are justifying that on the basis that your life is not worth living any more except to show the injustices perpetrated against you. On an objective basis, that is just not true. You have a child whom you love dearly and I am sure would love you too, were you to let him back into your life. You also do have financial assets, even if not immediately realisable ones.
I think that you need to re-engage with the mental health services on your own terms. You need to get back a regular sleep cycle and a sense of balance and self worth. I know, from your position, the above probably seems akin to climbing Mount Everest. However, with the right help and, given your clear intelligence, I am sure it is something that you could do. I would put your campaign on hold until you have your own equilibrium back. From that position, you will be far more effective anyway.
At least do one positive thing a day: clean one room or have a shower. I would also put your house on the market and leave somewhere which you now associate with trauma and unhappy memories. Also I suspect that you are heading for being sectioned again if you are not looking after yourself. This is something that you can prevent by looking after yourself and your environment, however hard it seems. I would again urge you to re-engage with the medical establishment on your own terms. I suspect you need something for your depression and sleep cycle no matter that it might have been caused by your false imprisonment in Alcatraz (as you put it).
You do deserve to get better, and to re-engage with your family and the broader community. You do, however, need to take a few tiny steps yourself to achieve this.