Disturbing scenes in the movies

I found it quite alarming that the film showed Gimli sitting on a dead orc with an axe in his head, as though this was a joke. After a titanic battle with the Uruk-Hai (or at least to begin with) in the Two Towers, one would have thought there would be a sense of relief, & joy of victory, as well as rememberance for the dead at the scene of the battle. Does anyone else agree with this & other scenes?

Although orcs are the true enemy for all & deserve no mercy, they should not be treated to this pathetic level. Gimli, afterall, is not an orc so why was he acting like one here?