Once, nothing; then conception - here you are playing your part in the making of Earth's history.
We are born, to whom or what, we have no idea or choice. We hold no power to influence issues of colour, race, creed or to issues of being born wealthy or living in poverty.
People often refer to the cliché that we are all born equal, the same, life is what you make it, this is quite true but only to a point. Wealth, education, the circle one moves in, your surroundings, all pre-determine your life from birth and onward unto death.
For an example, being born into poverty and squalor you will not aspire to be educated at Eton or Harrow (U.K.'s aristocratic schools), you are excluded by poverty and prejudiced by lack of wealth. Our parents instil within us their desires, fears, their beliefs and their failings, they indoctrinate our minds, eventually we become "clone" like.
We, as offspring, are only free to think when we become young adults. We are endowed and live by a sub-conscious set of codes and moral behaviour patterns, instilled within us by our parents and partly by genetic inheritance from our forefathers.
We as humans expect that one day we will die, but the Christian tenet of the after life and resurrection will give its followers the sense of immortality. Within this doctrine, we fantasise with omnipotence, glorifying a super being of great power, whom we situate in an abode we like to call "Heaven" itself situated in hyper-physical space. No human being using his or her five senses has ever physically contacted this mythical creator, yet we fervently uphold the faith.
Notice the trees depicted in the painting are aphyllous (devoid of leaves) embedded in one is a door, suggesting the door to opportunity or entering or leaving a situation. It also depicts that the tree and door are one and the same.
Like all humans we form opinions against race, colour, religion etc., but we are one and the same. The only positive difference between us that society condones is being rich or poor, your education and your location and standing in society.
In complexity models, the individual agents (people) are regarded as autonomous. Each has the same freedom to act, each has the same initial abilities. How they develop depends upon their choices at each stage. This determines what they experience, what they learn, what they achieve. In any scenario, each agent is of equal value. It isn't possible to predetermine which will be successful and which may fail. Even where agents seem to have specific advantages, the interplay of complex systems preclude predictions of their ultimate value within the social context.
Prejudice, of any form, is scientifically groundless...