Natural Instinct and everybody does it

So why is everybody pretending when they saw this picture as if the girl in question is an alien. It is a natural instinct that everybody does. Genevieve Nnaji, Kim Kardashian,

Ini Edo, Goodluck Jonathan, Janet Jackson, Omotola Jalade, President Obama, Oprah Winfrey, Linda Ikeji, Seun Osewa, Mercy Johnson and Rita Dominic, everyone of these people do it at one time or another and they will continue doing it as long as they live. It is called Scratching!... The only difference between this girl and those other people is somebody made a picture of the girl scratching. Please free her joor.