Joseph………..
a true Capitalist is in business to make profit. One sells product to people willing to purchase, one doesn’t have to like them, just take their money. Fred Trump was not going to live among the purchasers fo the properties in Brooklyn and Queens and if selling to Jews didn’t harm total sales, so be it. If at that time selling to Negroes (deliberately using the accepted term of the era) would have caused whites to shy away, he would not have sold.
I inherited a bungalow in the Catskills that was built in 1946 and marketed to returning US servicemen after WWII. The deed had a restriction that no person of color could could buy, occupy the cottage, or use any common facility (lake, ball fields, casino, etc.) nor be on the premises for more than 4 hours per week to clean or cook. Do I think it represensible? Yes…but the law of NY and the USA permitted these restrictions until 1964 when the Civil Rights Act was signed by LBJ.