This is an interesting video and very useful for teaching purposes made by Lisa Wade and Gwen Sharp of the wonderful blog Sociologcial Images. They explain in a very concrete way the idea of social construction; a key concept in sociology and anthropology that refers to how people giving to the world. As they explain social constructions (like race) are powerful and often contested; understanding social constructions is therefore important.

[youtube:http://www.youtube.com/watch?v=GVVWmZAStn8]

UPDATE:

Lisa Wade and Gwen Sharp won the Citasa Award for Public Sociology and the annual ASA conference. Congratulations, well deserved!