The practice or act of intentional and blatant avoidance, disregard or disagreement with facts, empirical evidence and well-founded arguements because they oppose or contradict your own existing personal beliefs.
This practice is most commonly found in the political or religious ideologies of "conservative" Americans.
Many times it is practiced due to laziness--people not wanting to have to do the work to rethink their opinions, the fear of the unknown, the fear of being wrong, or sometimes simply close-mindedness.
alt. form: willfully ignorant
This practice is most commonly found in the political ideologies of "Liberal" Amercian Politicians.