https://youtu.be/qYsMtroVLeA?t=287
The big thing that I want to talk about here is out groups. This is a phenomenon that we that we see, which is that it's very very easy for people to decide that someone else is not like them they're different and they should be shunned and talked about.
This is the minimal group paradigm. Thanks to Rashmi for giving that term. [It] says the smallest possible difference will be magnified into in group and an outgroup. Kevin Marks, Web 2.0 Expo NY 09: "...New Words You Need to Know to Understand the Web"
Perhaps we can decrease the levels of fear and racism in our society by tummelling? By bringing in outsiders, treating them with dignity and respect within your own group of friends, you can help to normalize their presence by decreasing the irrational fears that others have built up and carry with them about these supposed outsiders.