Complex sentence: In 1968, she helped to organized Boston University's largest demonstration to date in response to the assassination of Martin Luther King and later in the year participated in the 1968 Chicago Democratic Conventionprotests.
Split into simpler sentences: In 1968, she helped to organized Boston University's largest demonstration to date in response to the assassination of Martin Luther King. Later in the year she participated in the 1968 Chicago Democratic Conventionprotests.