id	keyword
ar-22451	inequality
ar-22451	structures
ar-22451	causes
ar-22451	sociological
ar-22451	sociology
ar-22451	societies
ar-22451	wealth
ar-22451	american
ar-22451	inequality structures
ar-22451	new
ar-22451	power
ar-22451	history
ar-22451	change
ar-22451	research
ar-22451	time
ar-22451	percent