What recourse do you have if a tyrant -- or someone with unchecked political or military power -- perpetrates grave crimes against civilians?
If the international police brutality amounts to an atrocity crime like genocide or a crime against humanity then you might be able to look to the ICC and its newly-elected chief prosecutor Fatou Bensouda for help.
The Gambian attorney is the ICC's second chief prosecutor. She takes over from Luis Moreno-Ocampo, from Argentina, who has been chief prosecutor since the ICC's founding in 2002.
The ICC secured its first conviction in March 2012, when Thomas Lubanga was convicted of the war crime of conscripting child soldiers in connection with violent conflicts in the Democratic Republic of Congo.
Currently the ICC is working of prosecutions against former Ivory Coast President Laurent Gbagbo (for crimes against humanity), Saif al-Islam Gadhafi, the son of former Libyan leader Moammar Gadhafi (for crimes against humanity), and Sudanese President Omar al-Bashir (for war crimes and crimes against humanity).
The ICC has not been without criticism but it is still developing and working out the kinks. The idea behind the court is that nobody is "above the law" and corrupt leaders who engage in international police brutality and abuse their people must be brought to justice like ordinary criminals.