South Park (1997)

S6E11 Child Abduction is Not Funny

To safeguard their kids from kidnappers, the parents of South Park enlist the help of the City Wok's owner to construct a massive wall around the town. However, chaos ensues with the introduction of kid trackers and Mongolions. Throughout this wild experience, the parents realize a crucial lesson about the importance of being cautious and not trusting strangers.