Complex sentence: In addition to distributing the letter to the media, Albizu wrote his own, charging that Rhoads was part of a US plot to exterminate Puerto Ricans, which was published in the "Porto Rico Progress" newspaper.
Split into simpler sentences: In addition to distributing the letter to the media, Albizu wrote his own, charging that Rhoads was part of a US plot to exterminate Puerto Ricans. These accusations charges were published in the "Porto Rico Progress" newspaper.