How human interactions have been racialized

I'm not sure what you mean by "racialized." Is this related to racial prejudice?

If so, here are some sources:

http://www.members.cox.net/dagershaw/lol/PrejudiceCauseSolution.html
http://www.members.cox.net/dagershaw/lol/Prejudice.html
http://www.members.cox.net/dagershaw/lol/PrejudiceChanges.html
http://www.members.cox.net/dagershaw/lol/PrejudiceReduce.html
http://www.members.cox.net/dagershaw/lol/PrejudiceUsThem.html

I hope this helps. Thanks for asking.