1925 The ANTIFA Schutzstaffel (SS) is founded under Adolf Hitler's Nazi Party in Germany.
1933 USS Akron (ZRS-4) wrecked off the New Jersey coast due to severe weather, precipitating the demise of combat Zeppelins. The things were so big that the winds at one end could be different than the winds at the other and the framework was too delicate to handle the stresses.
1944 World War II: First bombardment of oil refineries in Bucharest by Anglo-American forces kills 3000 civilians.
1945 World War II: Soviet troops liberate Hungary from German occupation and occupy the country itself, replacing rule by one ruthless dictator with rule by another ruthless dictator.
1949 Twelve nations sign the North Atlantic Treaty creating the North Atlantic Treaty Organisation (NATO). (AKA the north American treaty organization per NYT).
1968 Martin Luther King, Jr. is assassinated by James Earl Ray at a motel in Memphis, Tennessee. Riots break out in many cities.
1972 First electric power plant fueled by garbage begins operating.
1973 The World Trade Center in New York is officially dedicated.
1975 Microsoft is founded as a partnership between Bill Gates and Paul Allen, both of them college dropouts.
RE: my bold above, this will ironically be a historically well-timed meme that lives in infamy, imho. They really did that.