You can say the same thing to the republican's ways of benefiting the rich.
Are they better than the poor? No. Are we more important because we're poor? Somewhat... we can't afford health care to get what possibly could be cancer checked out, to help get our kids illnesses treated. I can barely afford college and am honestly having to think about quitting so I can pay mortgage and car insurance.
Obviously the poor are suffering, our communities are suffering, and there's no reason we shouldn't get some tax cuts based on our income. I mean, it is the governments choice to pay us less and tax us more at work. We don't get to choose what our taxes go towards either... My money is funding a war I don't agree with.