Behaviour and not birth defines the Outcaste!
Once a brahmin asked the Blessed Buddha: What makes an Outcaste?
The Blessed One then explained: Not birth or family, but evil bad behaviour
defines an outcaste:
Whoever is angry, irritable, cruel, hypocritical, has wrong views and who is
false, pretending and deceitful, such one should be known as an outcaste.
Whoever in this world harms living beings, who has no pity, who terrorizes,
destroys or besieges villages & towns as a notorious dictatorial oppressor,
such one should be known as an outcaste.
Whoever in a village or a forest takes by theft, what was not given to him,
who having lend money, when requested denies to repay, who due to desire
for some trifle commits violence, such one should be known as an outcaste!
Sn 116-121

On behaviour see also Kamma = Intentional Action. (Sanskrit: Karma):
Kamma_is_intention, Kamma_leading_to_short_&_long_life,
What is Right Action?, Kamma_leading_to_Health_&_Sickness
Intention_is_Kamma, Kamma_leading_to_Low_or_High_Birth,
Kamma_and_Rebirth, Kamma_leading_to_Wealth_or_Poverty
Buddha_on_Kamma, Kamma_leading_to_Beauty_&_Ugliness,
Kamma_and_Fruit, Kamma_leading_to_Power_or_Disrespect
Kamma_leading_to_Stupidity_or_Intelligence, Rebirth_and_Kamma.



The Outcaste...