Doing things in anger (yelling, etc.) is probably not a good thing but then again I would argue that there are times when certain people need a good chewing out. One of my friends actually followed a woman home once because she was talking on a cell phone and pulled out in front of her. My friend had her young son with her and she pointed to him and told the woman something like she could have killed him! A little out of line? Maybe... but so is talking on a cell phone and pulling out in front of people because of it. Tough call...