In the days of Jesus tax collectors deserved the scorn of the people because often they abused their position. Here is how William Barclay describes the business of the tax collector in the Roman world:

'The problem of the Roman government was to devise a system whereby the taxes could be collected as efficiently and as cheaply as possible. They had done so by auctioning the right to collect taxes in a certain area. A man bought the right to collect the taxes within a certain district; he was responsible to the Roman government for an agreed sum; anything he could raise over and above that he was allowed to keep as commission. Obviously this system lent itself to grave abuses. People did not r…