Barbara Stocking, Oxfam's chief executive, said a "global new deal" was needed to reverse decades of increasing inequality.
We can no longer pretend that the creation of wealth for a few will inevitably benefit the many - too often the reverse is true.
Concentration of resources in the hands of the top 1% depresses economic activity and makes life harder for everyone else - particularly those at the bottom of the economic ladder.
In a world where even basic resources such as land and water are increasingly scarce, we cannot afford to concentrate assets in the hands of a few and leave the many to struggle over what's left.
More top news
Irish police have seized £32 million worth of cannabis hidden in farm machinery on board a ship docking in Dublin.
Revellers reportedly jumped from the upper level of the lakeside venue to escape the flames.
A bomb blast reportedly struck a refugee camp in Syria near the border with Jordan causing injuries and deaths.