I know a guy that brought into this "capital letters" nonsense.
He did what these lunatics advise and wrote to various agencies "opting out" of the system making the declarations that these poeople advise and effectively convincing himself he was no longer liable to pay taxes.
Fast forward 5 years - he'd paid no taxes and so lost his house, his wife left him and he got fired from his job.
He now works for the US Postal service.
Funny thing is - he's still sending out mails 'teaching' people how to opt out of the system so they are no longer a corporation and therefore not liable to taxes.