“My understanding is that the KKK doesn't even ban members by race… [and] has less racist bylaws.”

"Intimations" (December 1941)
One Man's Meat (1942)
Context: Before you can be an internationalist you have first to be a naturalist and feel the ground under you making a whole circle. It is easier for a man to be loyal to his club than to his planet; the bylaws are shorter, and he is personally acquainted with the other members. A club, moreover, or a nation, has a most attractive offer to make: it offers the right to be exclusive. There are not many of us who are physically constituted to resist this strange delight, this nourishing privilege. It is at the bottom of all fraternities, societies, orders. It is at the bottom of most trouble. The planet holds out no such inducement. The planet is everybody's. All it offers is the grass, the sky, the water, the ineluctable dream of peace and fruition.

Peter Singer - The Genius of Darwin: The Uncut Interviews - Richard Dawkins https://www.youtube.com/watch?v=GYYNY2oKVWU, 2009.
Source: Practical Ethics
Context: Speciesism is an attitude of prejudice towards beings because they're not members of our species, so just as racism means that you're prejudiced against beings who are not members of your race and sexism means you're prejudiced against people of the other sex. So we humans tend to be speciesist in we think that any being that is a member of the species homo sapien just automatically has a higher moral status and is more important than any being that is a member of any other species, irrespective of the actual characteristics of those beings.

[ Link to tweet https://twitter.com/dril/status/749438005706883072]
Tweets by year, 2016

As quoted in The Star - Bersatu will fight for Bumi rights https://www.thestar.com.my/news/nation/2018/12/11/muhyiddin-bersatu-will-fight-for-bumi-rights/, 11 December 2018
Quote

1920s, First State of the Union Address (1923)
Context: Already a considerable sum is appropriated to give the negroes vocational training in agriculture. About half a million dollars is recommended for medical courses at Howard University to help contribute to the education of 500 colored doctors needed each year. On account of the integration of large numbers into industrial centers, it has been proposed that a commission be created, composed of members from both races, to formulate a better policy for mutual understanding and confidence. Such an effort is to be commended. Everyone would rejoice in the accomplishment of the results which it seeks. But it is well to recognize that these difficulties are to a large extent local problems which must be worked out by the mutual forbearance and human kindness of each community. Such a method gives much more promise of a real remedy than outside interference.

White Liberals: We’re Not Racist (August 29, 2016)

Source: More, Now, Again: A Memoir of Addiction

2010s, 2010, Interview on Today (November 2010)
Context: I am not a hater. I don't hate Kanye West. But, I was talking about an environment in which people were willing to say things that hurt. Nobody wants to be called a racist, if in your heart you believe in equality of race.

Tweet (2 December 2015) https://twitter.com/MichaelCohen212/status/672013495878184960