>>”...at some point the extremes on both the left and right bend around and meet at some crazed point. “
That is because the “extremes” are both anarchism, either “socialist” anarchism, or “individual” or “selfish” anarchism. Both of these are imagined to lead, ultimately, to utopia. Inevitably, they do not. Ever. They only lead to an almost identical tyranny.
DG
The movement of society has been relentlessly left since at least 1900 and the issue of our day is extreme left/socialism/Communism. Conservatives are about getting us back to a Constitutional republic with limited government. Maybe we'll have to fight for it with guns if necessary like our founders fought for freedom.
Maybe the difference on the right between legitimate and extreme (not as the left portrays it but in reality) is illustrated by the difference between the American Revolution and the French Revolution. I think in America, you had "Give me freedom or give me death," but kept on track with restrained Christian values. In France, the revolutionaries were worse than the regime they overcame - there was no restraint and a blood bath followed.