He claims he wasn't racist - then what is this about?

https://lawandcrime.com/high-profile/nixons-doj-had-proof-the-trumps-were-drowning-in-evidence-of-racial-discrimination-new-book-says/
Nixon’s DOJ Had Proof the Trumps Were ‘Drowning in Evidence’ of Racial Discrimination, New Book Says

According to yet another new book, President Donald Trump has a racist history, and this history goes all the way back to the 45th president’s halcyon days as an inherited wealth and real estate mogul in New York City.

The scene to be set here is something Scorsese-like:

It’s the fall of 1973 and the Saturday Night Massacre is days away from shifting the Watergate scandal past the point of no return. While the White House scrambles its legal strategy on the daily, other federal attorneys have a steady course of action. A lawsuit from the Department of Justice (DOJ) roils Fred Trump and his 27-year-old son.

According to the DOJ, the Trump family violated the Fair Housing Act (FHA) of 1968 in their operation of 39 buildings–most of which were located in three neighborhoods spanning Brooklyn and Queens.

He claims he wasn't racist - then what is this about?
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