Social Engineering, Labour-Style.

A couple of weeks ago we had the revelation from an ex-number 10 aide that Labour deliberately opened our borders to immigrants in order to force multiculturalism in the UK. They would call it social engineering to enhance cultural diversity.
But was multiculturalism the real aim, or was it the importation of a mass of thankful Labour voters?

Over the past 12 years we've had new public financed call centres open up, predominantly in poorer northern areas in order to boost the economy. Labour would call that social engineering in order to bosst deprived economies.
But was helping deprived areas the real aim, or was it to keep core Labour voting areas onside and voting for Labour?

Labour have increased benefits introducing working tax credits, child tax credits and the like, Labour would say in order to help the poor and reduce child poverty.
But it hasn't decreased child poverty. All it has done is create more work for government departments. Departments created (again) in northern Labour areas.
If Labour really wanted to help the poor, why did they abolish the 10p tax rate?

Or, is it as I suspect that all Labour policy is really about is buying votes to keep Labour politicians in power and sat with their snouts in the trough?