May I ask you to spare some time to read and view " Sign of the Times" by Andrea Serrano.
I'm not sure how to post it on here, but he is part of the Guardian Comment Network, the link is a video via the Guardian online news.
"...I started buying the signs that homeless use to beg. Here's what happened
I purchased 200 signs from homeless people in New York City. The collection tells the story of poverty in America and the world..."
Very much a concern here in the UK and elsewhere.