he was never inside; always on the outside.
a loose cannon.
the media was exceedingly critical the whole time; edward murrow's eventual smack down was only effective because it was the establishment position on the matter.
so, the russia fiasco is fundamentally incomparable to the red scare. the red scare was carried out mostly by conservatives at the fringe of the political spectrum, and received little support from the deep state establishment; indeed, the red scare was scary precisely because it was seen as a possible vehicle for an authoritarian uprising - and ignored by most because that couldn't happen here.
the russia fiasco is being pushed by the most resilient members of the deep state in order to take down a sitting president - a sitting president that they installed, themselves.
i understand that "mccarthyite" is more of an english word at this point, with a specific meaning. so, something doesn't have to be much like the red scare to be mccarthyite. but, it's still recent enough to bring up the history in the minds of those that know it.
generally, the cia wants you to shut up and buy shit, not cower in the corner waiting for the apocalypse. the russia narrative is a necessary evil, to stop people from putting together the actual pieces: namely that the cia fed assange the information to prevent hillary from winning. but, it's extremely uncharacteristic.
and, i wouldn't expect a parallel to this any time soon - or even to really find a good one in american history.