Kareem Jackson has been suspended yet again ... this time, the NFL levied a four-game ban on the Denver Broncos safety after it says he illegally hit Joshua Dobbs during a violent play on Sunday night.
The tackle happened just seconds into Denver's tilt with the Minnesota Vikings, when Jackson launched himself into Dobbs' face while trying to make a tackle.
Replays of the hit show Jackson tagged Dobbs in the chin area with the crown of his helmet -- a big no-no, according to the NFL exec Jon Runyan, who announced the suspension Monday afternoon.