DESCRIBING A PHOTO

I took the photo on the sly, this summer in an avenue of Sevilla.
In the picture you can see a cardboard written by a homless person asking for money (You can read: Una ayuda para comprar un chalet en Marbella y un Ferrari, Please help me to buy an apartment in Marbella and a Ferrari) and in the background, people walking without even looking at him. He's invisible for them.
I think that the importance of the picture is not the picture, but rather the message.
It makes me feel strange: I think it's very sad (because nobody gives him money), and quite funny at the same time. He's trying to make people laugh, and they don't give him any money.
And it makes me think over the situation of this kind of people too.