Complex sentence: In 2014, she starred in Justin Simien's Sundance winner "Dear White People", and played civil rights activist Diane Nash in Ava DuVernay's Martin Luther King, Jr. biopic "Selma".
Split into simpler sentences: In 2014, she starred in Justin Simien's Sundance winner "Dear White People". That same year, Thompson played civil rights activist Diane Nash in Ava DuVernay's Martin Luther King, Jr. biopic "Selma".