John Maynard Keynes, 1st Baron Keynes  ( KAYNZ; 5 June 1883 - 21 April 1946), was a British economist whose ideas fundamentally changed the theory and practice of macroeconomics and the economic policies of governments. He built on and greatly refined earlier work on the causes of business cycles, and was one of the most influential economists of the 20th century and the founder of modern macroeconomics theory. His ideas are the basis for the school of thought known as Keynesian economics, and its various offshoots. During the Great Depression of the 1930s, Keynes spearheaded a revolution in economic thinking, challenging the ideas of neoclassical economics that held that free markets would, in the short to medium term, automatically provide full employment, as long as workers were flexible in their wage demands.
Views on race
Keynes sometimes explained the mass murder that took place during the first years of communist Russia on a racial basis, as part of the "Russian and Jewish nature", rather than as a result of the communist rule. After a trip to Russia, he wrote in his Short View of Russia that there is "beastliness on the Russian and Jewish natures when, as now, they are allied together". He also wrote that "out of the cruelty and stupidity of the Old Russia nothing could ever emerge, but (...) beneath the cruelty and stupidity of the New Russia a speck of the ideal may lie hid", which together with other comments may be construed as anti-Russian and antisemitic.  Some critics, including Murray Rothbard, have sought to show that Keynes had sympathy with Nazism, and a number of writers described him as antisemitic. Keynes's private letters contain portraits and descriptions, some of which can be characterized as antisemitic, others as philosemitic. Scholars have suggested that these reflect cliches current at the time that he accepted uncritically, rather than any racism. On several occasions Keynes used his influence to help his Jewish friends, most notably when he successfully lobbied for Ludwig Wittgenstein to be allowed residency in the United Kingdom, explicitly in order to rescue him from being deported to Nazi-occupied Austria. Keynes was a supporter of Zionism, serving on committees supporting the cause.  Allegations that he was racist or had totalitarian beliefs have been rejected by Robert Skidelsky and other biographers. Professor Gordon Fletcher wrote that "the suggestion of a link between Keynes and any support of totalitarianism cannot be sustained". Once the aggressive tendencies of the Nazis towards Jews and other minorities had become apparent, Keynes made clear his loathing of Nazism. As a lifelong pacifist he had initially favoured peaceful containment of Nazi Germany, yet he began to advocate a forceful resolution while many conservatives were still arguing for appeasement. After the war started he roundly criticised the Left for losing their nerve to confront Hitler:  The intelligentsia of the Left were the loudest in demanding that the Nazi aggression should be resisted at all costs. When it comes to a showdown, scarce four weeks have passed before they remember that they are pacifists and write defeatist letters to your columns, leaving the defence of freedom and civilisation to Colonel Blimp and the Old School Tie, for whom Three Cheers.

Q: What did Keynes think about race?
A: explained the mass murder that took place during the first years of communist Russia on a racial basis,

Q: Were his views popular?
A: Allegations that he was racist or had totalitarian beliefs have been rejected

Q: What did he think that could have been racist?
A: sought to show that Keynes had sympathy with Nazism, and a number of writers described him as antisemitic.
What other views on race did he have?
there is "beastliness on the Russian and Jewish natures when, as now, they are allied together".
there is "beastliness on the Russian and Jewish natures when, as now, they are allied together".