“How can two people hate so much without knowing each other?”

Source: The Winner Stands Alone

Unguarded comment in Leeds while discussing rival devolution bids — "Cameron caught on camera making 'people in Yorkshire hate each other' jibe" Press Association, The Guardian (11 September 2015) http://www.theguardian.com/politics/2015/sep/11/david-cameron-yorkshire-people-hate-each-other-caught-camera?CMP=fb_gu
2010s, 2015

Source: Benny and Babe

Bok IV, Ch. 4
My Antonia (1918)

Chuck Klosterman IV: A Decade of Curious People and Dangerous Ideas (2006), Recognizing Your Nemesis

Source: Marriage Rules: A Manual for the Married and the Coupled Up

In reference to the Alabama Council on Human Relations, an organization which was joined by King, whose church's meeting room was used to hold monthly meetings for the Montgomery chapter the council. Stride Toward Freedom: The Montgomery Story (1958)
1950s
Context: Although the Montgomery council never had a large membership, it played an important role. As the only truly interracial group in Montgomery, it served to keep the desperately needed channels of communication open between the races.
Men often hate each other because they fear each other; they fear each other because they don't know each other; they don't know each other because they can not communicate; they can not communicate because they are separated. In providing an avenue of communication, the council was fulfilling a necessary condition for better race relations in the South.

1920s, What I Believe (1925)