There is nothing about a van and a flag that deserves respect automatically. There is no need for Labour to superficially embrace markers of a tabloid version of w/c identity. Miliband is displacing his own failure to bring forward pro w/c policies onto the scapegoats of populist right wing withchunts.
He didn't mean that you docile wrecker. Miliband meant that the tweet was disrespectful and that, you should automatically respect people - which is just common decency. Miliband reacted correctly - the problem Labour has that because it turns out the bloke does have a few "interesting" views then enough Labour types will use that as an excuse to continue showing disrespect and so probably over shadow Ed's action (because like you they don't understand what the millionaire liberal snob did wrong)