But that type of person can be found in any political party. To give those reasons as the basis for your political opponent's positions is to take the easy way out. Once you've labeled your opponent in this way, you don't have to actually argue the facts. I believe that most people are of good will, and hold positions based on a desire for real progress in this world. However, even people of good will can disagree on the importance of various goals, and the methods used to reach them.
Disagreements can be about left versus right.
It does not have to be good versus evil. People of good will do have to watch out for the extremists in their midst. Mimi is right that there are some people who base their positions on ignorance, hypocrisy and bigotry. These people make life much more difficult for those truly working to find just solutions to the world's problems. When they raise their heads they should be condemned, particularly by those in the same political party.