CBC News captured video footage of Gatineau Mustang fans screaming profanities, giving the middle finger and sexually crude gestures to the opposing team and referees during their Junior B playoff game against the Stittsville Rams on Friday.
"It's always a fiasco when you come here," said Hamish Fraser, the Rams coach and general manager. "There's hatred among basically the Ontario teams and the Quebec teams."
It's gotten to the point where Gatineau police regularly patrol their games.
Officers have been called to the Buckingham arena 10 times since January 2015.
"A lot of them are related to bad behaviour in the stands," said Sgt. J.P. Lemay, a spokesperson for the Gatineau police.
Police responded to an alleged assault in February at the rink. An enraged parent allegedly knocked over a barricade onto a volunteer at the arena during an argument.
The volunteer did not press charges.
Alcohol cited as a factor
At last Friday's playoff game three police cruisers parked outside the arena, while officers patrolled the stands. The rink also beefed up security.
Staff stood guard behind the visitor's bench, penalty box and Zamboni exit where fans are known to holler at opposing players.
Parents visiting the rink say the problem's fuelled by alcohol. Stittsville Rams parent Carmyn Penner said she's witnessed beer fly onto the ice.
"You feel anxious," said Penner. "For me as a parent watching, it takes the fun out of the game for me."
The rink added barriers behind the visitor's bench after complaints of fans yelling and dumping drinks on players and coaches.
One of the league's conference presidents Ron McRostie said meetings have been held with general managers to keep the alcohol at Buckingham arena confined to an upstairs bar area.
But on Friday the stands were full of fans drinking.
"We have made a concerted effort," said McRostie, "It's something that the league has a hard time, this is the only establishment where alcohol is served."
As for fan's bad behaviour in the stands McRostie said "I have no control over it."
Coach: 'not OK to act like that'
Gatineau Mustangs assistant coach Steven Cross did comment on parents screaming profanities after their star player was injured in what turned out to be a season-ending loss.
"It's not OK to act like that but parents have emotions like anybody," said Cross.
"It was a bad check from behind."
The Eastern Ontario Junior Hockey League is downsizing next year from 22 teams to 16. Cross said he worries their team won't be part of the new league.
Hockey Canada is expected to comment on parent's behaviours in the stands later today.