Directed by Ted Kotcheff
Written by Michael Kozoll, William Sackheim and Sylvester Stallone
AKA Rambo
IMDB

A Vietnam War veteran, John Rambo(Green Beret), is hassled by some cops while he's trying to meet up with a war buddy. His pal passed away due to cancer caused by agent orange. The cops arrest Rambo and beat him with no justification. This sends Rambo into flashbacks, causing him to go temporarily insane. After he beats up all the cops and escapes jail, he high-tails it to the woods. Here he continues to fight the police.
This movie is probably better than you think it is. It's a solid film, taking on the "Most Dangerous Game" scenerio to a degree. Man in a forest is being hunter or does the hunting. There are so many movies made in the 80s that follow this plot. It's a good story and allows for a good amount of violence.
The body count in this movie is pretty low. Rambo just got pushed too far by the police after being treated so poorly once he came back from the war. It's a good commentary on the poor treatment of war veterans.

8/10