In talking with researchers and looking at the studies on this, I found that it is possible to reduce people’s racial anxiety and prejudices. And the canvassing idea was regarded as very promising. But, researchers cautioned, the process of reducing people’s racism will take time and, crucially, empathy.
This is the direct opposite of the kind of culture the internet has fostered — typically focused on calling out racists and shaming them in public. This doesn’t work. And as much as it might seem like a lost cause to understand the perspectives of people who may qualify as racist, understanding where they come from is a needed step to being able to speak to them in a way that will help reduce the racial biases they hold. (Source)