Ahmadzadeh was an active opposition to Pahlavi dynasty since the early 1950s and hailed as the "symbol of heroic resistance against SAVAK", spending 10 years in prison under the regime. Considered a well-known nationalist and a prominent leader in Mashhad, he co-founded a Mossadeghist and religious organization called the 'Center for the Publication of Islamic Truths' along with Mohammad-Taqi Shariati, father of Ali Shariati. He joined National Front's 'National Resistance Movement' in Khorasan after the 1953 coup d'état and served as a member of central committee of its provincial branch, though not affiliated with any particular political party. Working closely with Mehdi Bazargan for almost four decades, he also helped him found the Freedom Movement of Iran.