His youth coincided with the assassination of Naser al-Din Shah Qajar, after which the capital underwent many changes. Residents close to the capital, like other Iranians, participated in the great developments of Iran. Heydar tried to support Hossein Pirnia (Moutamen al-Molk), who became the Speaker of the National Council and a six-term representative of the National Council from the Central Province (Tehran) branch of the Democrat Party.[8][9][10]