Billionaires' wealth has risen sharply to a record high of $18.3 trillion — with the super-rich seeking power "for their own gain," according to Oxfam.

Governments opting for oligarchy while brutally repressing protests over austerity and lack of jobs, charity report says

Billionaires' wealth has risen sharply to a record high of $18.3 trillion — with the super-rich seeking power "for their own gain," according to Oxfam.

Charity says superrich 4,000 times more likely to hold political power than others and own all social media companies.