A sweet science and not a vehicle to be used to appeal to the base instincts of marauding thugs. Time was when you never saw one bit of trouble in the crowd at a boxing match, now it's commonplace.
You say you're old then you just gloss over reality like it's an old colour that can be just painted over...
Wherever there's alcohol, there's fighting. It is timeless. This year, last year, last decade, the 90s, the 80s, the 1800s, back to before Christ was born. Just because you didn't attend places that fights broke out, doesn't mean it didn't happen. I've been to plenty of events that were civil overall, but also been to a few where things do go sour - almost always alcohol influenced.
If anything, these days it is far better because of better policing, more CCTV and a better indentification of transgressors.
I can't quote specific incidents nor am I prepared to do the research into it. However, I remember the riots when Judah was assailed, or Bowe fans invaded the ring. Back before the 90s, far fewer events were recorded, so word of mouth was generally the vehicle for reporting incidents, thus far fewer broke through the national press. I just think you are romanticizing the past. The 80s was a nightmare for football hooligans. Are you going to say, with a straight face, that the fight game didn't have any such "characters" in its crowds? I'd suggest you were liar if you do.