Hey fire desire, grow up man, 'an eye for an eye will leave the whole world blind'!
Going by your logic, why restrict tit for tat only to Brahmins? See for yourself how funny this logic is when extrapolated to other things : 1. India should somehow suppress Britain because the British suppressed India for hundreds of years.
2. All hindus should take revenge on muslims because of the atrocities committed by zealot muslim rulers like Aurangzeb
3.Israel should declare war on Germany for the holocaust
4. All countries in central and south asia should take revenge on Greece for what Alexander did.
5. India should attack China and Mongolia for what Chengez Kahn did
......... you can imagine the long list of 'tit for tat'.
Can such primitive logic be the basis for state policy?