My guess is that the Los Angeles Dodgers have a stronger interest than anyone else in getting this resolved quickly. As someone who has lived in the New York City area for most of my life and grew up as a fan of the Yankees, I can tell you that one or two incidents like this can depress attendance for decades.
Which pretty much explains why soccer hooliganism is virtually non-existent today in the English Premier League, it's in the lower divisions, with cheaper tickets where it continues to be somewhat of a problem.
“My guess is that the Los Angeles Dodgers have a stronger interest than anyone else in getting this resolved quickly.”
Then you don’t know Frank McCourt, Dodger owner. The Dodgers demonstrated no interest in what happened, and even after the bad publicity began to overwhelm the LA airwaves they haven’t done much.