It is certainly true that some individuals (from all major parties) took criminal advantage of expenses. I am not sure who you mean by 'a few, inconsequential, sacrificial lambs' though.Well....they all had their snouts in the trough....from every political persuasion.....over the expenses scandal....which had been going on for years and apart from a few, inconsequential, sacrificial lambs....and some pathetic gestures to repay monies incorrectly claimed.......was brushed under the carpet.
Not much difference there.
However, your comment has a similar 'populist' inclination to the one expressed by @wehatepalace .... that is 'all politicians are the same' (they are not) and they 'all had their snouts in the trough' (they did not).
Do you ever feel that you are being engineered to react in this way? That is not meant as an insult and I do hope you will consider the proposition seriously before responding (assuming you can be bothered to).....