Officials announced Friday an internal review determined that 25 officers posted or shared objectionable material.
Four of those officers have been placed on administrative leave because of the extreme nature of their posts.
The findings come after The Plain View Project last month released a database cataloging thousands of bigoted or violent posts by police officers in several states.
More than 1,000 public posts from people identified as current and former Dallas officers were flagged by researchers with the project, which spent two years looking at the personal Facebook accounts of police from Arizona to Florida.
The Dallas posts also included joking about police shooting victims.
Copyright 2019 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.