The struggle for Puerto Rico decolonization has always been fragmented due to the following reasons.
COINTELPRO is the FBI’s code name for its Counter Intelligence Program. Its purpose is to make sure that things stay the way the US government wants. The FBI will do whatever it takes to maintain the status quo. That includes violating its own laws and committing murder! There are various books about COINTELPRO that you could read. The one I read was published in the 1970’s and is called, The COINTELPRO Papers.