Examples of common topics in which denialists employ their tactics include: Creationism/Intelligent Design, Global Warming denialism, Holocaust denial, HIV/AIDS denialism, 9/11 conspiracies, Tobacco Carcinogenecity denialism (the first organized corporate campaign), anti-vaccination/mercury autism denialism and anti-animal testing/animal rights extremist denialism. Denialism spans the ideological spectrum, and is about tactics rather than politics or partisanship.

I don't know why people would use such tactics when in denial as opposed to just facing the music. It only compounds your problems and disillusions yourself. Obviously, there are varing degrees of it, but why waste the energy even on the slightest bit. Such stress will make you die well before your time. I'm not perfect, but I make a conscious effort to realize it as much as possible and deal.

Denialism, as a social problem, keeps growing.

Global warming denialism is very prevalent and well organised.