Why did the author include this passage in the article about Zach Hunter?

Zach Hunter is an anti - slavery activist as well as an author.

Explanation:

At the age of 12 years Zach Hunter started Loose Change where he made extreme effort to stop slavery. Once when he was asked why did he involve himself in this movement at a very young age, he said that he came to know that there are 27 million people who work as slave all over the world. This condition made him angry and his aim became to abolish slavery. He motivated young minds as well as activists to take part in this movement. Various organisations are Free The Slaves and International Justice Mission.