MAGA is just the logical end-point of any right-wing ideology. Just like every far right party in the world, it wasn't birthed in a vacuum. It's just amping up the same rhetoric that has been the bread and butter of right-wingers for half a century: perceived unsafety, anti-immigration sentiment, destruction of social nets in pursuit of these ever-elusive trickle-down economics, scapegoating of minorities...

I don't know how "radical" you can call it since it was popular enough to get the White House and most of congress. Twice.

I really don't see what in right-wing ideology has ever served the cause of minorities and marginalized groups, even before MAGA.