There has to be a target audience that this slide show was designed for and we should assume that there was enough positive feedback from that target group that this slide show is plus gain in votes for Obama
My Guess is that the target is the young voter under 30. I think the best way to respond is by using an analogy based on designing a computer game city, explain how much production is taken away and how much is returned. (for every dollar in benefits paid how much does the Gov keep…etc)
It would be best to avoid attacking the benefits but attacking the costs of collecting and distributing and enforcing them. Lets take the argument away that it is revenue based, change it to why does it cost 25k to give someone a 2k rebate.