Let me share a passage from the dissent in a Supreme court case known as Plessy v Furguson. The majority of the court had just ruled that it was OK to force blacks to use seperate railcars from whites. Not only that, but it was OK for for the government to force railway companies to have such a rule. With this backdrop Justice Harlan spoke in dissent, arguing for true equality under the law. In the screed for justice, he wrote:
There is a race so different from our own that we do not permit those belonging to it to become citizens of the United States. Persons belonging to it are, with few exceptions, absolutely excluded from our country. I allude to the Chinese race. But, by the statute in question, a Chinaman can ride in the same passenger coach with white citizens of the United States, while citizens of the black race in Louisiana, many of whom, perhaps, risked their lives for the preservation of the Union, who are entitled, by law, to participate in the political control of the State and nation, who are not excluded, by law or by reason of their race, from public stations of any kind, and who have all the legal rights that belong to white citizens, are yet declared to be criminals, liable to imprisonment, if they ride in a public coach occupied by citizens of the white race.
Thats right folks. There was a period of us history where even your pro equality arguments were steeped in racism
More to the point. Even if you (for some reason) set asside the hole issue of slavery; there is still the whole Jim Crow era, where we litterally codified rasism into law.
I have not listened to his DNC speach, but back in january he introduced a resolution that would have invoked the legal requirement that US assistance not be used to commit human rights violations. It failed 72-11.
Back in April, he spoke in the senate opposing the $8.9 billion offensive military aid to Israel; after having introduced amendments to cut those provisions out. (If you read 1 link from this post make it this one).
As early as October 11, he was calling for the US to force Israeli restraint, and explicitly calling Israel's responce a violation of international law
On October 25, he demanded information on how Israel was going to use the first aid package before it went to a vote in the senate, which was formally sent to Biden November 1.
At this point I stopped going through his press releases, because at this point, he just sounds like a Cassandra.