Lerxst, if you allow the poor sports to dictate how you conduct yourself then you will unfortunately become one of them. I know it's hard to ignore them because they are the most vociferous, but there are not more of them playing. If you want to be a good sport then follow the example of the many good sports here and simply ignore the poor sports.
When you do this, you will want to know who you killed and who killed you because it adds to the community of the game.