From plane crashes to assassinations, overdoses to terrible illness, the Kennedy family has been struck by a bizarre amount of devastating tragedies over the years. After a car crash in 1969, Ted Kennedy, who had by this point lost 4 of his siblings under tragic circumstances, wondered aloud if “some awful curse did actually hang over all the Kennedys”.
The sheer number of tragic illnesses and deaths involving the family has led many to deem them ‘cursed’ in some respect. The tragedies suffered by the Kennedys, combined with their glamour, ambition, and power, have captured the imagination of people across the world for decades.

SOURCES
https://www.jfklibrary.org/learn/about-jfk/the-kennedy-family/rosemary-kennedy
The Kennedy Curse: Why Tragedy Has Haunted America's First Family for 150 Years; book by Edward Klein
https://www.scribd.com/read/200210777/Curse-Of-The-Kennedys-And-Other-Powerful-Family-Tragedies
https://www.history.com/this-day-in-history/john-f-kennedy-assassinated