(CNN)It's easy to sight the obvious racism such as using race-based slurs or threats. But there's a more subtle and insidious form of racist stereotyping that can be hard to pin down.

These stereotypes often come in the form of microaggressions — brief and commonplace verbal, behavioral or environmental indignities, said Beverly Daniel Tatum, a psychologist and former Spelman College president, in a previous interview with CNN. Tatum is also author of the classic books "Can We Talk About Race?" and "Why Are All the Black Kids Sitting Together in the Cafeteria?"

Microaggressions can be intentional or unintentional and sometimes even well-meaning. But they communicate hostile, derogatory or negative racial messages or assumptions to the receiver.

The ability to even notice these instances requires educating yourself about the experiences of black people in America and the significance behind such remarks.

Here's a list of common microaggressions, the messages they send and what to say when you hear friends, family or colleagues say them.

https://www.cnn.com/2020/06/05/health/racial-microaggressions-examples-responses-wellness/index.html