I can't say that I have seen that type of behavior as being prevalent at Fenway. I can say that it is the only ballpark where I have seen that type of behavior. I saw it as late as 1977 when Jim Rice hit a ball to the gap and a guy got up and yelled "Run N--!" over the rest of the crowd. I am from Brooklyn, NY and that would have started a race riot where I am from. My first reaction was to get ready to run for the exit because my fight or flight instinct kicked in. But nothing happened. No one reprimanded him or confronted him. He was not removed initially. It was appalling. It would be unfair to accuse the crowd of accepting the behavior. Clearly, from my observation, most people in the crowd were offended and did not approve. As the guy continued harping on Rice, my recollection is that he was booed and that he did not last the entire game.
The same leather throated ******* was also screaming at Yaz calling him a Pollack. It was only one guy, but it was an eye-opening experience for me. I haven't witnessed anything like that at Fenway in over 43 years, but I don't doubt that it has happened since then. It only takes 1 ******* to poison the environment. In NY, there would have been blacks in the crowd, and the guy would have been violently confronted immediately. Back then at Fenway, the crowd was almost entirely white. This guy got booed and eventually was removed from Fenway. I always felt that he was not from Boston and not a Red Sox fan as his attacks were entirely directed at the home team. The good news is I have not seen that type of behavior at Fenway or any ballpark in more than 40 years.