Pink Dog

I am not quite sure what to make of this poem. In my opinion, the poem could be one of two things: a satire of some kind, or an illustration of anger towards a certain people. The poem compares "pink" or naked dogs to the poor and homeless of the area, criticizing them. All of the diction throughout the poem gives a negative tone (anger, disgust, irritated, ect.); such as, "mortally afraid of rabies", ..poor bitch while you go begging.." All these things remind me of how people in biblical times treated those who had leprosy. They were completely outcast and thought of as dirty. My question is, is the author/speaker showing how they feel on these poor unfortunate people - or are they proving a good point that these people are treated badly but should'nt be?