Chill up bro , you must have personal irritation from Biharis but fact is UR class exist through out India even in Kerela exp or Vivek exp or any other exp and people take it . Don't how people reach to such puny conclusion . i can say you must be with those for such long journey as you know , Travel some day in Pnbe rajdhani you will know who is travelling in which class . INCOME inequalities exist all over India stop TARNISHING a particular place .