I don't ordinarily upvote articles about politics, but I upvoted this one because (a) it's a fairly dispassionate, thoughtful analysis (b) of what it claims is a turning point (rather than just the everyday back and forth of politics).
Overthrowing Trump is such a popular topic among his adversaries since he won the election surprisingly. So many "turning points" have been claimed by the "resistance" front. So I won't buy this one. OTAH IMHO "turning point" as a concept is enough vague, so IIRC you can claim many prior and posterior events to be turning points.