Malky: It puts lives in danger
behaviour also saw United players Kevin McDonald and Tony Watt being hurt after collisions with their own fans.
Mackay, the former SFA performance director, understood the jubilance and hailed the carnival atmosphere United’s fans brought to the game.
But he fears there could be a serious incident or fatality even if action is not taken to avoid similar incidents.
The County boss said: “It’s the last day of the Premiership season and there was a kind of carnival atmosphere.
“What it did was give us a great atmosphere, with them bringing so many fans with them.
“But that safety aspect, with pyrotechnics coming on, is something that needs to stop in Scottish football as it can hurtpeople. You
have people who need to lift those off the pitch and they are 500 degrees.
“I really don’t enjoy that at all and it happened too much. I’m fine with the party atmosphere and people spilling on and off, as it’s one of those days.
“But the pyrotechnics need to be looked at and addressed. People are behaving in a certain way now they are back at football which didn’t really happen before.
“Across the board it’s not acceptable, if we are talking about safety at clubs, and respect at grounds for anything and everything. Stewards are trying to get these things off the park and it’s putting their lives in danger.”
Mackay had to take his players off the park and into the dressing room to await the United fans’ departure before allowing his players a lap of honour after top-six success.
He said: “This group will split up but it’s important they thank the fans.”