Note that the anger MPs are feeling about the expenses revelations is directed not at those MPs who are abusing the system and bringing them all into disrepute, but at those who are exposing them. Labour MPs are convinced there is a “Tory mole”* in the fees office, others think that digitised versions of their soon to be released receipts are being shopped around the papers.
MPs are after blood – the blood of the whistle blowers rather than the blood of those robbing the public.
That is how morally compromised they are, no longer able to see that what they are doing is wrong. They just want to stop the sunlight shining on their dodgy practises.
*Having been involved in a few of these expense fiddle stories coming to light, MPs should realise that the sources are often constituents, outraged staff, disgusted civil servants, sometimes rival politicians from the same party and often the result of plain old digging. Politicians are now widely despised as a class, don’t be surprised that your dirty secrets are becoming public knowledge.