Remove dogs at the first sign of aggression. Aggression should be thought of as intent to do harm.
"His bark is worse than his bite."
This is literal for most dogs. Few dogs want to fight and will put on displays to make other dogs back down. As long as this is effective and ends conflict without injury, it should not be considered aggressive.
If your dog is involved in an unpleasant experience, please remove it from the park for the day. Dog play can be rough; dogs can chase, nip, wrestle and bark without being aggressive.
Part of the important socialization dogs get from interacting with other dogs is learning to express their desires appropriately. Watch interactions carefully; intervene if one dog appears to be in distress.
Use of the dog park is at the owner/handler's own risk. Permit/pass holders and their guests agree to hold the CIty of Indianola harmless for any injury or damages to person or property by use of the park.