Answer:
Often wandering the streets, this group of people cannot afford to be choosers.
What can you easily break but never touch?
An utensil used for bread. Also a paper cutter. Used by a thug to take a life, Or wielded by the tamest wife, When used to spread the butter.
What cleans as it gets dirty only to get clean the more you use it?
It carries paper of the most important sort but also plastic, I'm glad to report. What is it?
A leathery snake, with a stinging bite. I'll stay coiled up, unless I must fight.