I want to know the answer to the following question:
What was referred to as the "Mass Movement"?
All the background I'm provided with is that "This ability was put to a test several times during his reign, notably during the Croatian Spring (also referred as the Masovni pokret, maspok, meaning "Mass Movement") when the government suppressed both public demonstrations and dissenting opinions within the Communist Party.". Is that enough to answer the question?
Answer: yes