Arguably the period where boxing was at its most popular, ever. Even baseball with Babe Ruth was second to boxing. IMO it also had the deepest lightweight and light heavyweight talent pools in the sport’s history. Just an iconic era, honestly.
I'm 66 years old, obviously wasn't around then, but have been around a while. No one really knows a lot about the 20's. You read stuff, some take as the gospel, but no one really knows how accurate the reporting was. Boxing was the top sport in the world. Baseball 2nd. Dempsey was the champ from 1919 to 1926, but there was a period where Jack Dempsey defended his title one time in 3 years. Legends like Harry Greb, Mickey Walker, Benny Leonard, Tunney, McLarnin, Jack Britton, Jack Sharkey, Ted "Kid" Lewis were in the game. Seemed to have some really good light heavys. There is some film, but it is of such poor quality you (me anyway) can't how really skilled some were. Fans identified with fighters of the same ethnicity, as that is one way in keeping pride in oneself. (today that would likely be considered racist). No TV, a little radio, had newspapers but at least half the people couldn't read. In the states, it was "let the good times roll". In Europe they were still recovering from World War 1. It was a lot simpler time, but also a harder time. It got worse in the 30's.
20s is about as good as it ever got Dempsey is the most iconic HW champion IMO (H2H one of the finest and most skilled) with a great story, I know you’re a fan of the heavies so just watch him fight, read @apollack books on him and expand from there into other fighters mentioned along the way.
@Richard M Murrieta can give us some first-round accounts. He was retired by then and had free time on his hands to take it all in.
The 20s feels more like a bridge between the late 10s and early 30s more than its own independent era IMO at HW and 175.
That’s okay, I can’t educate you on the 20s I don’t know that much about the history but I read a book or two and @apollack is the man if you want to be as smart as Janitor when it comes to JD or anyone he’s written about, if you want ALL the facts it’s there.