Ignoring the poor, and ignoring what keeps the poor, is, quite simply, unchristian. For the poor are the church in many ways. When St. Lawrence, in the fourth century, was ordered by the prefect of Rome to turn over the wealth of the church, he presented to him the poor.
Glenn Beck's desire to detach social justice from the Gospel is a subtle move to detach care for the poor from the Gospel. But a church without the poor, and a church without a desire for a just social world for all, is not the church. At least not the church of Jesus Christ.
While fighting the unjust conditions which cause poverty is a core task for Christians, it is not the only task.
For example, unless we do everything we can to prosecute government officials who ordered crimes against humanity (such as starting wars under false pretenses and torture), we are not fulfilling our Christian responsibilities.