Final answer:
Fidel Castro was the spokesperson for those opposing Batista's reforms. He led the revolutionary movement against Batista with his brother Raul and individuals like Ernesto "Che" Guevara, starting on July 26, 1953, which eventually led to Batista's overthrow.
Step-by-step explanation:
The spokesperson for the people that opposed Batista's reform was Fidel Castro. After legal methods to challenge Batista failed, he, alongside his brother Raul and other revolutionaries such as Ernesto "Che" Guevara, began organizing a revolution which started with attacks on July 26, 1953. Their initial efforts were unsuccessful and led to their capture, but after their release, they continued to gather support and plotted their return to Cuba from Mexico.
Opposition to Reforms in History
Throughout history, many attempts at reform have been met with strong opposition by counter-reformers or vested interests who stand to lose from the proposed changes. These groups often challenge the existence of problems or dismiss the concerns as exaggerated. An example is the Comunero Rebellion of 1781 against colonial monopolies, where protestors initially succeeded only for their leaders to be later arrested and executed when the Spanish Crown reasserted its control.
Similar patterns of opposition to reform can be recognized in the establishment of the Spanish Republic and the resistance to liberal constitutions in Spain post-Napoleonic period. The tension between change and conservative backlash remains a constant theme in the socio-political landscape across various revolutions and changes in government.