Robert Eury and Joella Lee-Eury filed a federal lawsuit against Kimberly Jennings, claiming she got physical with their son and 8-year-old daughter because they were using the pool at the apartment complex she manages.

In the docs, obtained by TMZ, the parents claim their kids were swimming in the pool at an apartment complex where their friends live when Jennings ordered them out of the water.

The parents say their kids were attempting to leave when Jennings approached their son and "poured soda over his head and struck him in the face multiple times all because him and his little sister was swimming in a pool at the property she manages."

In their suit, the parents claim Jennings also pulled their daughter's hair and hit her after ordering the kids out of the pool. The parents even claim Jennings told their son "he was acting like a real n*****."

Jennings was later arrested on an assault charge, but the parents say their kids are still reeling from the pool incident ... so now they're suing for discrimination, assault and battery, and intentional infliction of emotional distress.