your observation in this context is incorrect.What ever you says if true then please remember two things.One you cannot punish the grand son for the mistake committed by grand fathere.Also remember those brahmins are forced to earn living only by begging and not allowed to own lands which are in the hands of kings belong to other castes(now the so called obcs).Then for that crime are you ready to take away the lands and distribute the same to the grandsons of these deprived brahmins.