Proverbs 28:1-12

Responsibility to the poor.
v.1 Guilty conscience. The wicked flee when no one pursues, but the righteous are as bold as a lion. A guilty conscience causes the wicked to flee (ACCS). The righteous have a clear conscience and don't need to look over their shoulders in fear.
v.2 Moral decay. Where there is moral decay, a government easily topples (or, the bureaucracy increases). But a man of wisdom and knowledge brings security and stability (maintains order, NIV).
v.3 The poor. A poor man (or ruler, NIV) who oppresses the poor (e.g., Mt 18:28) is like a pounding rain that destroys the crops, leaving no food for the hungry. The tyrant takes away the produce and labor of the poor and driving rain takes away the crops and soil (NICOT).
v.4 Do right. Those who forsake doing right (ignoring instruction/the law) praise the wicked (Rom 1:32). Those who continue doing right (heading instruction/the law) strive against the wicked (14:8).
v.5 Justice. The evil man does not grasp (or understand) justice (their evil thoughts and intentions blind their eyes) while the one who seeks the Lord understands it completely (or all). See Ps 92:6-7.
v.6 Walk in integrity. It is (much) better to be poor and walk with integrity than to be rich and crooked in your ways. Parallel in Prv 19:1. There are of course rich people who walk with integrity, the proverb only addresses those rich who are perverse.
v.7 Gluttons. A young man who is a companion of gluttons (habitually greedy) brings shame on the family, but the young man who obeys the law is wise.
v.8 Usury. If you increase your wealth by charging interest on the poor, you gather it for the one who is generous to the poor. In Israel it was against the law to charge the poor interest (Ex 22:25). Wealth obtained through unjust or unlawful means will eventually go to the poor.
v.9 Hear the law. If you turn away from hearing the law, even your prayers will be counted an abomination. See also 15:8. Don't expect God to listen to you if you don't listen to him.
v.10 Just reward. The man who leads an upright person astray will be destroyed by his own evil. Likewise, good rewards wait those who walk in integrity. The proverb shows that the righteous are corruptible and can be led astray into sin.
v.11 Wise in their eyes. The rich are wise in their own eyes (26:16), but a poor man with understanding will find them out (see through them).
v.12 Righteous government. When the righteous triumph the city is glad (11:10), when the wicked get ahead, the people hide (28:28).

Read Proverbs 28:1-12