Disapproved of the use of black slaves as he believed it was immoral to exploit people based on their appearance. Blake was an advanced and modern thinker who did not accept the typical Christian point of view. When we delve deeper into the poem we realize that it also describes colonialism. Blake wrote this poem at a time when slavery persisted in London and many blacks worked for English aristocratic families. It would not be wrong to say that the boy and his mother were also taken away from the “wild south”, presumably Africa, to England and that the entire poem revolves around their life in England. Blake's motivation in writing this poem was to create awareness among people who should condemn such activities. He wanted to eliminate the mental block that persisted among the people of