 The Marxist People's Democratic Party of Afghanistan's (PDPA's) strength grew considerably in these years.In 1967, the PDPA split into two rival factions, the Khalq (Masses) faction headed by Nur Muhammad Taraki and Hafizullah Amin and the Parcham (Flag) faction led by Babrak Karmal.The leaders of the Khalq faction tended to be Pashtuns from a poorer background while the leaders of the Parcham faction were usually Farsi-speakers from the Tajik and Hazara ethnic groups who came from well-off backgrounds.