What can be done to stop the republicans constant lying and why do people continue to believe them?

The right wing lies have caused so much trouble. The ordeal that Shirley Sherrod was subjected to was perfect evidence of the extents rebulicans will stoop to to attack our present administration. It is neither civil nor helpful to our country and I don’t understand why there are not more legal actions taken to put an end to this? Why are people so willing to believe their lies, do they really hate having a mixed race president that much, is a pissing contest with democrats really more important than trying to better our country and help its average citizens? I really want it to stop so we can get on with the important business. Am I a dreamer?