The parks and recreation department has approved an updated behavior policy, with consequences for violations.

The policy was drafted after unruly behavior at open swim sessions led to some participants getting kicked out, Kate Thomas, parks and recreation director, said.

The TikTok-inspired vandalism and pranks that school officials have seen were also on the department’s radar, she said. While they haven’t seen anything inspired by those trends, Thomas said parks and recreation wanted to get ahead by warning of the consequences.

Those pool kick-outs happened toward the end of September and b...