Unexpected Variable

Once upon a time, humans existed in peace and harmony with no grievance between them. Blacks among whites, red haired among blondes, children without guns, Christians among Muslims and even the gays and the straights; everyone were happy until..... Tragedy struck,the people got divided, the fights were unending, lives ruined and people scared, it marked the start of a new era, one dreaded and loathed and therefore leading to the time of great division where humans became their own greatest fear and enemy. TBC.....