Brahmins are very good & shrewd people. They don't themselves involve in any bad things. Who said there is caste system. It is the people who themselves took some parts & do it themselves. Example, HAIR CUTTING, specific people doesn't want others to be in the field. TEMPLE PRIST, specific people doesn't want others to compet in that field. So, they did some arrangement between themselves not to mingle w/ other people's work. Later competition avoiding measures were were termed as caste etc.
