The moral way to do this is to allocate a large sum of money and buy up all the bitcoin that is available for sale. This would take a few generations and make several families not affiliated with the bankers quite wealthy. This is one of the reasons the bankers won't stick with the moral means: it spreads financial power to those who earn it.
The alphabet agencies of the United States (CIA, FBI, NSA, etc.) have been engaged in immoral projects since they were founded, usually relying on the shortsighted and nearsighted and (actually quite normal) functionaries who, if they could see the whole picture, would not help for the average salaries they earn. This includes analysts, engineers, coders, couriers, spies, law enforcement, etc. If you don't believe me, listen to the 91 episodes of The Peace Revolution Podcast. It provides ample evidence, rather than just claims such as I am making. Do your own research. It's good practice.
I believe I have identified the immoral method through which the price of bitcoin will be made so volatile that most people will shy away from it. However, some, such as myself, will simply profit from the efforts, and use the profits to help rebuild things. The method, or something quite similar, has been called "The Doublecross" and involves the cooperation of law enforcement to avoid enforcing the law in the cases where the criminal act benefits those at the top, such as the murder of that stooge, Lee Harvey Oswald by Jack Ruby. There is a warning in here for all of you who are close enough to the powerful to derive some benefit from them. Aside from any bad karma, you'll eventually be a liability, and your life will end for that reason. Just walk away, my friends. Walk away.
Essentially, powerful spy agencies, including the UK's GCHQ and the US's CIA, FBI, and NSA (and even the Kremlin and whatever components of Kim Jong Il's government and China's government and all the rest are responsible for collecting information on people) gather dirt on people. If you want to hold some power, you have to be dirty so that the power you hold is really under the control of those who have the dirt on you. If you think about it, this explains why both Victoria Roberts and Nancy G. Edmunds worked (and continue to work) officially and on the record to suborn perjury from Doreen Hendrickson.
This dirt-collection scheme can be used to leverage a large number of insiders in just about every company on the planet. That's a lot of work, and not feasible, but if you restrict that group of companies to "Bitcoin exchanges" then it's feasible. The spy agencies, we can assume, have dirt on people like Nejc Kodric and/or several of his employees, along with the same sort of people at other exchanges. In short, they have enough blackmail material to co-opt bitcoin exchanges, and force someone to provide them with the means to commit a heist such what happened to MtGox a while back, and what happened to Bitfinex a couple hours ago.
Consider all the evidence and history surrounding the biggest bitcoin heists (take that link with a grain of salt - the author says "Billions of Bitcoin are still "missing" in todays economy" which anyone who understands bitcoin knows is impossible), and see if it seems like there might be some kind of powerful (politically powerful, like spy-agency powerful) forces preventing rectification of what is clearly theft. Where is Karpeles today? I don't know.
In a nutshell, the strategy I see playing out is that governmental agencies, on behalf of the people who want to control everyone, are deploying their massive resources in black operations to amass bitcoins in ways that will not make honorable people rich so that they can manipulate the price more easily. Will it work for them? I don't think it will. I will profit from their attempts, but since I think their attempts are a net negative for my species, I will spread my theory in the hope that more people will profit from their efforts (thus, defeating them) as I do.
In fact, profiting from their efforts simply means buying when the price goes down and selling when it goes up. Since dollars are the easiest thing to use to value stuff, choose a dollar amount, and choose a number of valuable assets in which to store your savings, and split your savings up between them. When the value of one goes up (or down), sell it (or buy it) and buy (or sell) whatever has gone down (or gone up less) with the proceeds.
If you or someone you know works for one of these spy agencies, consider carefully whether or not your efforts are making things worse or better. Short term profit is fun and enjoyable, but life gets miserable when karma catches up, and no one knows how fast she is.