Complex sentence: Kennedy endeared himself to farmworkers through his support of the Delano grape strike and subsequent communications with Cesar Chavez, farmworkers and Chavez working on the Kennedy campaign, the latter of whom telling students in California that Kennedy was the candidate for farmworkers.
Split into simpler sentences: Kennedy endeared himself to farmworkers through his support of the Delano grape strike, subsequent communications with Cesar Chavez, farmworkers and Chavez working on the Kennedy campaign. The latter of whom telling students in California that Kennedy was the candidate for farmworkers.