I remember that national sporting teams also had major problems years ago until they started to take responsibility for their teams behavior.
One national team on a flight to Honolulu did so much damage and disruption that Qantas refused to carry them back to Sydney and they had to find alternate means of getting back.
All airlines have had similar problems and some still do.
Subjective if it is worse now as more flights, more airlines and many more passengers?
Most airlines handle these issues appropriately.