"After the war, the new Filipino government tried to reinstate the pre-war ownership of the land, leading to the reactivation of the Huk organization in 1946. In the years that followed until 1954, the Huk movement fought the government who responded with harsh repression of the civilian population. By the 1960s, the remaining few Huk units had mostly degenerated into criminal bands.

Increasing criticism of the U.S. involvement in Filipino affairs led to the formation of several protest groups in the early 1960s. Inspired by the successful revolutions in China, Cuba, and Vietnam, the younger members of the PKP were eager for the party to resume armed activity. The Huk veterans spearheading the party responded by expelling a group of younger members led by Jose Maria Sison in 1967."

Source: Uppsala Conflict Data Program (Date of retrieval: ) UCDP Conflict Encyclopedia, Uppsala University