Biases become harmful when they lead us to treat people unfairly. When unfair treatment of a particular group is widespread in a community or society, it gives rise to discrimination and inequality. But due to the country's long embrace of racially discriminatory laws, policies, and social codes, racial bias stands out as a particularly entrenched and destructive problem.

The roots of bias -- How implicit racial bias develops -- The destructive effects of racial bias -- Is implicit racial bias hardwired? -- Fighting implicit racial bias.