First of all, I appreciate your kind intention.
Although it is a satire that you beat a rich guy in the game for what he was a dick to someone poor than him to make the players become another dick, I would rather like to discuss the other part of the content.
At first sight of the game trailer, it let me think if you could add the realistic element in your game, it would be more interesting and meaningful, such as the whole spitting animation (the moving image and sound).
Also I wonder why you would like to let someone receive the homeless' picture, video or shopping list as the exclusive content, it did not make sense with the game, unless if you only want the donators to get honor or pity from them, I suppose that you could use these materials in the game to present a real situation of the homeless.