You admit to defacing currency which is a crime.
Not a very conservative position, disregard for inconvenient laws, is it? But I've never met an atheist who thought the law should be obeyed if he disagreed with it.
So tell me, how is your disregard for inconvenient laws any different than wanting atheists imprisoned? Personal preference is the basis for both.
Actually, defacing currency is only a crime if the intent is to alter the bill to gain a benefit (example: trying to change a $5 bill into a $20 bill). That's considered a forgery; forgery of United States currency in this manner is called counterfeiting and carries stiff penalties.
Not that I'm defending the defacing of currency ... to me it's as bad as graffiti.