If anyone thinks the big banks and big governments are going to allow a decentralized currency commenced anonymously to overthrow the status quo or even allow the market to determine which system will prevail is delusional.
I think the only reason why some central banks or governments have allowed Bitcoin unrestricted is because they are hoping the market will reject Bitcoin. That and also because to restrict the use of Bitcoin would be inconsistent with the free growth of technology and the market. This, I fear, will change once Bitcoin starts becoming a more dominant presence.
No system of money or thought or religion or philosophy can expand without persecution.
You might not have done a lot of reading on the technology of bitcoin. Do you have a particular method of persecution in mind?
If you are suggesting there is some kind of attack they can perform on bitcoin you should post it in the "Development and Technical Discussion" section. All possible vectors of attack are considered and if necessary changes can be made, this is part of the anti-fragile property.
The war of ideas you are alluding to has been shifting inexorably to the Internet and technology platforms in general, now they have to play undeniably on our turf for this one.
I'm not sure how you formulated that response based upon my comments. I'm not speaking of a technical assault. I'm speaking of government and central bank restrictions on bitcoin (e.g. exchanges, bank transfers, etc) and laws that forbid the open use of Bitcoin.