Social stratification is present in almost all society, and it happens that Serapio is a beggar and a lot of people are "more" powerful than him.
The conflicts on the play were not really resolved. The sense of relief was present when, after a very long time, Serapio was found innocent. Still, more powerful people found HOLES just to punish him. In the end Serapio was blinded because of a very odd reason or crime, having HOPE and DREAMS.
The main issue discussed in this play is the social injustice and inequality, which is always present. This connects with the blinding of Mang Serapio that symbolizes how powerful those people higher than the beggar are and how those people contaminate their selves with vainglory pushing the weak just to save their faces. They could handicap another man and limit his/her actions. Being a blind man means a man is limited to see and that is to see the truth and eventually fight his/her own