Police in Kazakhstan yesterday detained dozens of opposition supporters who took to the streets of major cities denouncing what they called political repression in the Central Asian nation. The ruling Nur Otan party has dominated the political scene in the former Soviet republic for almost three decades while opposition movements, sidelined and with no seats in parliament, mostly make themselves heard through public protests. Supporters of two separate opposition groups rallied in different locations in Kazakhstan's biggest city, Almaty, and a few other big cities yesterday to demand political reforms and the release of people they described as political prisoners.