A college football player straight-up body slammed a cop during his arrest in Ohio this week ... and police video of the incident is INSANE.
Cops say on Monday they got a call from a woman at a Grove City, Ohio business who said Michael Harris -- an Eastern Kentucky University linebacker -- was acting erratic.
In the call, according to police docs obtained by TMZ Sports, the woman claimed 19-year-old Harris was being "aggressive" and "did not seem to be 'all there.'"
When officers arrived on the scene ... things took a horrible turn -- because cops say after they confronted Harris, it got violent.