The melee ruined what was supposed to be a family friendly event for many and now changes are being made to prevent something like this from happening again.

"The event was quickly disrupted by fights breaking out, largely between arriving youths, and unruly behavior," the Collingwood Police Department said in a statement.

About 200 teens and young adults caused chaos at a PTA-sponsored hayride in Collingswood, authorities said.The large group was dropped off by several vehicles on the outskirts of Knight Park on Saturday,