Unlike a certain other so-called Public Service Announcement, this one actually is a public service announcement because it raises awareness about the dangers of eating meat.

Kwame Ture was a leader of the Civil Rights and Black Power Movements. He is credited for popularizing the term, “Black Power.”

KRS-One stands for Knowledge Reigns Supreme Over Nearly Everyone. Knowledge is kind of important to him if you haven’t noticed.

Unlike some other rappers, he actually lives his life by the message in his music.

KRS-One’s intellectual rap is different than most of the money, cash, hoes rap that dominates the mainstream.

KRS-One is the Teacha

He’s KRS-One so he’s number one. This is also a reference to his Boogie Down Productions song “I"m Still # 1”, off the album “By All Means Necessary” released in 1988

Philosophers would generally be in opposition of war, but anybody in opposition of the government would be killed.

For example, in the Stolen Legacy, George G. M. James says

…both the pre-Socratic philosophers together with Socrates, Plato and Aristotle were persecuted by the Athenian Government for introducing foreign doctrines into Athens. (p. 17)

Socrates was seen as a threat to the government and he was charged with corrupting the minds of the youth, and impiety: not believing in the gods the Athenian state did and introducing new ones. He was found guilty of his charges and was sentenced with the death penalty. He died in 399 BCE.

Above is one of the most famous depictions of Socrates' death by Jacques-Louis David (1787), with his friends around him, drinking the poison hemlock.

640 to 322 BCE is the time period in which the first pre-Socratic philosophers and the Seven Sages were thought to have lived to when the last of the original Greek philosophers died.
In George G. M. James' book, Stolen Legacy (1954), he sees the period ranging from the birth of Thales (640 BCE) to the death of Aristotle (322 BCE) (p. 10).

After this period, the understanding and knowledge philosophers shared about Egypt was lost, possibly because membership of the Kemetic Mystery System, James says, “was gained by initiation and a pledge to secrecy”: the Egyptians “forbade their Initiates from writing what they had learnt” (p. 1). This could be why there are no records of Socrates’ works.

Two of the wars during this era were the Peloponnesian and Persian. The Peloponnesian war was fought between the Delian League led by Athens, against the Peloponnesian League led by Sparta when Greece was divided into city states known as poleis (singular polis). The war was from 431–404 BCE.

The Persian Wars were between Greece and Persia and lasted 50 years: 499-449 BCE. During this time Persia invaded Greece twice: in 490 and 480 BCE. Athens and Sparta, contrasted to the Peloponnesian, formed an alliance against Persia for the war, fighting alongside other states like Thebes and Thespiae.

There are reports that the Greeks studied under priests and were influenced by Imhotep, an Egyptian polymath, who was a physician 2,500 years before Hippocrates, and Aesop (“Ethiopia” in Ancient Greek), a storyteller who, like his name suggests, might’ve been African. He influenced Socrates: who read and changed Aesop’s stories into verses whilst in prison. Pythagoras was likely to have been influenced by Egyptian mathematics: the pyramids are known to have been positioned to incorporate what’s known as the Pythagorean theorem despite being built 2,000 years before he was born.

Aristotle, in Metaphysics, acknowledges Egypt as the origin of “mathematical arts.”

Western scholars and the State were not comfortable with the philosophers citing Egypt as a source of inspiration. Hegel, an 18th and 19th century Western philosopher, was a reflection of this. He regarded Africa as “no historical part of the world”; having “no movement or development to exhibit.” The Philosophy of History, p. 117.

Another was Thomas Jefferson: the third president of the US, in Notes on the State of Virginia thought Africans will “scarcely be found capable of tracing and comprehending the investigations of Euclid” (p. 329). Euclid born in Alexandria, Egypt, was a mathematician famous for his geometric system and treatise, The Elements.