[penetraitor69]

Agreed. But at the same time, a key part of normalization is constant exposure; people who are exposed to extreme views incessantly are less likely to recognize them as "extreme" than those who only see them once in a blue moon, and see them get moderated when they do.

This isn't even specific to extremist views or even politics in general; in all parts of life, from the foods people eat, to the religion they practice, to the music they enjoy: people will consider "normal" that which they constantly perceive.