The worry, obviously, comes when people are the objects of expulsion, when social groups (religious or political) seek “purity” by purging themselves through social scapegoating. This dynamic—purity via expulsion—goes to the heart of the problem in Matthew 9. The Pharisees attain their purity through an expulsive mechanism: expelling “tax collectors and sinners” from the life of Israel. Jesus rejects this form of “holiness.” Jesus, citing mercy as his rule, refuses to “sacrifice” these people to become clean.
The implications of this practice still impacting society today with not just the rejection of "unclean", but the disabled as well.
