Far-left and far-right ideologies have more in common than many people realize (including the people within those factions). They are both based on the principle on low tolerance, and as such they are well-aligned on the idea of strict enforcement of their ideologies.

There are some hilarious misconceptions that members of those factions have about their own ideologies. Far-left is against the police brutality, but there is a 100 year history of perfect correlation between leftist regimes and policy brutality.

Far-right is against government interventions in all economic matters, but that also has never materialized anywhere else.

The bottom line is that anything that's far-something requires suppression of the society's natural tendency to return to the center.