In the 1970's, listing what I can remember, which is more than 1 or 2:
AMF (Harley Davidsons) appeared in the motor company showrooms.
The Beatles broke up in 1970. (previously mentioned) MENTIONED
The Munich Olympics Massacre happened 1n 1972.
The oil crisis started in 1973 when I had a job at a gas station. (previously mentioned)
The movie Jaws came out in 1975, and I loved it. (previously mentioned)
The Mary Tyler Moore Show went off the air in 1977, I still miss it.
Elvis died in 1977, but some people think he is still alive! (previously mentioned)
Best of all, Honda introduced the CBX 6-cylinder motorcycle, there were other 6-bangers out there, like the 1972 Benelli Sei and the Kawasaki KZ1300 water-cooler, but Honda had the best marketing. I had a '79 CBX for about five years, best bike I ever owned. Six carbs, six pipes, six speeds, powerband from nothing to infinity, oil-in-the-frame, only 2" wider than a CB750, double overhead cam (DOHC), 24 valves, 9.3 compression ratio, 105 HP, 1/4 mile time of 11.5 sec, twin disc brakes in front - single disc in the rear, 40 MPG, and only 440 pounds. It was a rocket that had a sound like nothing else.