Institutions of domination, by necessity, always prey on the weak. The robber always looks for those victims least able to defend themselves . Force/violence is a costly/risky endeavor, and it is always in the interest of the dominator/subjugator to use the least amount of cost, and expose themselves to the least amount of risk, to gain the greatest amount of ill-gotten gain. If you wish to know who has the least amount of political power, see who the State dominates the most; see who are those in the prisons, why are they there; who are those most greatly taxed and coerced; see who are killed by the direction of the State and you will see those that have the least amount of political-power, the power to direct and control the State apparatus. They surely are not directly the State apparatus in such a way as to be against their own interests!
See who is benefitted the most by State action and you will see who has the most political power.