I do not believe Cameron was making a generilation he was at a private meeting and no doubt meant the few Labour members to which there are many quotes and plenty of reading to suggest he may have a point.
I like Alan Johnson's words in his speech today which had he not been a Labour Grandee and well respected,( at least he was) would have caused equal trouble.
" I find this decision as difficult as anyone to make, I wish I had the self-righteous certitude as our 'finger jabbing' representatives of our new and kinder type of politics who will no doubt soon be contacting those of us who support this motion tonight"
Well looking at another thread he knew exactly what was coming.