"Show me where in the Constitution does it say that the government should take care of the poor."
What does the constitution, or the government for that matter, have to do with the ethics of the statement "poverty is unacceptable at any level in society"?
I don't need a fucking constitution to tell me that it is unacceptable to me if anyone in the world I live in is forced to go without food or water. It is natural law, above anything white men wrote 237 years ago, or 1237 years ago, or 12,370 years ago. It makes no difference.
But if you love revered documents more than anything else when forming your moral conscience, allow me to direct you to the Bible:
-Deut. 15:7-8 - "If there is a poor man among your brothers in any of the towns of the land that the LORD your God is giving you, do not be hardhearted or tightfisted toward your poor brother. Rather be openhanded and freely lend him whatever he needs."
-Proverbs 21:13 - "Whoever closes his ear to the cry of the poor will himself call out and not be answered."
-Matthew 25:41-45 - "Then he will say to those on his left, ‘Depart from me, you who are cursed, into the eternal fire prepared for the devil and his angels. For I was hungry and you gave me nothing to eat, I was thirsty and you gave me nothing to drink, I was a stranger and you did not invite me in, I needed clothes and you did not clothe me, I was sick and in prison and you did not look after me.’
“They also will answer, ‘Lord, when did we see you hungry or thirsty or a stranger or needing clothes or sick or in prison, and did not help you?’
“He will reply, ‘Truly I tell you, whatever you did not do for one of the least of these, you did not do for me.’"
-James 2:15-17 - "Suppose a brother or sister is without clothes and daily food. If one of you says to him, "Go, I wish you well; keep warm and well fed," but does nothing about his physical needs, what good is it? In the same way, faith by itself, if it is not accompanied by action, is dead."
-1 John 3:17-18 - "If anyone has material possessions and sees his brother in need but has no pity on him, how can the love of God be in him? Dear children, let us not love with words or tongue but with actions and in truth."
Shall I appeal to other basic moral traditions, or do you agree that poverty is 100% unacceptable?