Toilers formed an alliance with Society of Mujahed Muslims, led by Ayatollah Kashani, pooling their resources and coordinating their activities against government. They actively participated in the 1953 coup d'état and called it a "national uprising", however opposed Fazlollah Zahedi's post-coup military government. Following their opposition, their newspapers was banned and their party office was confiscated by the government and the party went on a hiatus until 1960 Iranian legislative election. They resumed activity in 1961 and expressed support for Ayatollah Khomeini in 5 June 1963 demonstrations.