There has been some interesting recent dialogue in Australia around whether large private companies should disclose the amount of income tax they pay. Proposed legislation would have required private companies with revenue over $100m to disclose their tax contribution. Public companies already have to do this.
The counter debate against this was that it would make the family members vulnerable to kidnapping and being held to ransom. However, interestingly, Dick Smith (former owner of the now defunct retail electronics chain), argued that these families do this already by their ostentatious displays of wealth. Simply saying how much they paid in tax was confirming what people always suspected, ie they had lots of money and probably paid little tax!.
For now, the proposal has been scrapped, but it was an interesting debate.