I'm about the same age too -- more useful to adopt the distinction (Tyrrell's) between the coat-and-tie radicals, who protested Vietnam, etc., etc. but not to the extent it would ruin their "political viability", and (I think) the penny-loafer conservatives; he sees these battle lines drawn in the 60s, 70s as continuing -- and strengthening into the present.
That's a great way to put it!
And as to the first group, they tried to destroy this country in the 60s and, IMO, they're back to finish her off!
Exactly. They discovered in the 60s and 70s that they couldn't destroy us by attacking from the outside so they're now trying to do it working from the inside. We can't let that happen.