Why does race seem to be the hardest word for white people? Dr Robin DiAngelo – a renowned anti-racism educator – argues that the underlying cause is environmental. White people in settler colonial contexts live in a racially insular social bubble. This environment builds an atmosphere of racial comfort but reduces their capacity to tolerate racial stress. Dr DiAngelo – author of What Does it Mean To Be White? Developing White Racial Literacy – describes this lack of racial stamina as 'White Fragility'.