IMO, there is some kind of correlation between efficiency in the economy and the inequality in the society. I believe that it is part of the government job to reduce the inequality... but the devil is on the details on how to do it.
To illustrate the point, consider India and the US. India has little inequality but lots of poverty (if we take the 5'th percentile of the US as the poverty line, then 95% of India is poor). The US has lots of inequality but little poverty.
http://economix.blogs.nytimes.com/2011/01/31/the-haves-and-t...