In the 1960s, antiwar activists adopted songs like the "Eve of Destruction" and "For What It's Worth" as their anthems. Disenchanted youth feared that the world was on the verge of collapse; we were nearing the end of days. Concurrently, the civil rights activists were singing the hopeful "We Shall Overcome." (Black folks singing an upbeat and emboldening song written by a white guy would be frowned upon today.) Both groups were buoyed by the blessing of free speech. Their voices were heard. Attempts at silencing them only made their voices louder and more widespread. Even people on the sidelines began to pay attention.
The war ended, civil rights moved forward, and life went on. People wanted not to sing the same note, but harmony. Even Rodney King, whose 1991 beating was a lightning rod for riots against police brutality pleaded, "Can we all get along?" Yes, we can. People have no appetite for or energy to waste on hating for sport. We have the freedom and sensibility to disagree and work toward peaceful coexistence – when we are free from government propaganda and media manipulation.
However, the political class thrives on discord. Since circa 360 B.C., the "divide and rule" concept was on the books. Philip II of Macedon, Alexander the Great's father, knew that with division comes weakness. The Greek rulers were able to keep the various cultural and ethnic groups in check by keeping them in a constant state of conflict. The factions are so busy bickering and jockeying for favored status that they fail to see their government's main objective is to stay in power, not to empower the populace.