Eh, HN has went enough political recently... But personally I enjoy a diverse set of reasonable people to talk politics with. There're little places with not much echo chamber AND not much shouting at each other at the same time...
The major question is what does count as being "about working people". Is it claiming you're for equality/diversity/whatever? Or working to make working people life better?
Labour feel threatened by globalisation, migrants and so on. Today's left is very clearly for that. Thus labour feels left is no longer working for their interests. The right, which is against migrants, feel much ore for their interests.
Of course, there's an economic theory that migrants help the host country's economy and everyone end up being better off. But a "working man" only see his wage stagnate due to increased competition and his rent raise. Or his work place gone completely due to outsourcing.
The left just declaring that they're for the working man is not enough. Their recent actions very clearly don't ring a bell for the working man. The feels (as much as I don't like that) is very important in politics. People are tired of politicians talking about several-degrees-removed benefits. Although sometimes (but, as we can see, not always) politicians are totally right and it is actually the right thing to do, public needs at least some direct benefits right away. Although this is frequently called as populism in a derogatory way, I believe it's a crucial part of democracy. And it especially rings true to less educated and less well off people which happened to be core electorate of the left.
Which is not a sign of "bigotry" or being "backwards" or whatever. Better off people have more wiggle room, can take more risks (e.g. voting for people who offer few-degrees-removed benefits in the future) and generally care about higher level stuff in Maslow pyramid. The labour don't have this luxury.