A descriptor for a leftist tactic

On the Bongino show, he describes what the left is doing with its complaint about the Betsy Ross flag.  He calls it "changing the rules".  He makes the analogy with boxing, in which the rules say --- "don't do take downs".  Well, the left decides to change the rules in the middle of the stream, and all of a sudden, "take downs" are okay.  The analogy here is that the Betsy Ross flag was okay for all this time, but now, all of a sudden, it is not okay.   This is what Bongino says is "changing the rules".

Let me generalize this into a pattern of ongoing tactics dating back for decades.  You know one example was repeated just this last week or so with the Democrat debates.  Harris did a "take-down" of Biden.  Now Biden is a racist, but he was okay before.  It was really a lot like the rules getting changed during the Bentsen-Quayle debate.  Once upon a time, you didn't make personal insults in a debate.  Then Bentsen did that, and Quayle wasn't ready for it.  Bentsen changed the rules on Quayle, and made him look bad.

It is becoming commonplace these days for the left to pull this trick out of their bag of tricks.  Evidently, the trick works for them.  Until the trick is countered effectively, they'll keep coming back to it again and again.

Look for them to "change the rules" for now on.  Everything is on the table with these guys.  It may be a "hail Mary" type tactic, as they may be on the way out.  Let's hope so.