Having read the post you just summarized Nickbat, the suggestion is not that there should be no political discussion, merely that it should be reduced in volume so as not overwhelm Gen Diss

If you want to change the world, a happy go lucky car forum is the wrong place. Writing to your MP/MEP would be more effective. If you already do that, and you really feel the need to tell someone, then simply post summat along the lines of...
'I heard/saw/read about XYZ, and felt it important enough to write to ABC about it and just thought it worthy of mention'. That anyone interested in that particular item can go off and research it for themselves and draw their own conclusions free of prejudice.
It is quite frustrating to read four or five 'stories' in the paper on a Saturday, all telling the same story from five different authors, when I saw them on the MSN home page two days earlier when I checked my emails. Then on Sunday and Monday they get repeated here, having been posted by the same few people.
Speaking for myself, if I wanted to read the same dross day in day out I would join Facebook and Twitter and have the Daily Mail streamed to my phone.