Basing your values on provably incorrect myths is building a house on the sand. Values must be fundamental and universal. They must be ends in themselves. They should not be based on trivia. They definitely should not be based on provably incorrect non-facts unless you plan on those values crumbling.
Good Value: All human beings deserve a basic, dignified standard of living regardless of their intelligence, who their parents are, or what their culture is like.
Stupid Value: All races deserve a basic standard of living because they have the same intelligence.
Fact: Jews score higher on intelligence tests than other races. Society widely agrees that intelligence tests measure intelligence. Therefore, Jews are more intelligent than other races.
If you base your values on stuff like "all races being the same" you are basing your values on non-truths and those values will crumble when faced with reality. Not all humans are the same. Not all cultures are the same. Not all biology is the same. Values should transcend petty questions about biology - they should be ethical value statements that recognize the value of all human life.
We should give minority groups fair treatment and a helping hand not because they "deserve" it but because it is fair and because we believe in the values of fairness and equal treatment for all human beings. Because we believe in the inherent value of human life - the sanctity of human life - and want to promote human life regardless of which culture it comes from, regardless of what biological quirks it displays.