In the minds of some few Dem'crats, it has become an impeachable offense to even BE a Republican. So the drumbeat will always be there, and stirred up at the least provocation.
The times have not been kind to the aging hippies who make up most of the voice of the Dem'crat party today. All their "new ways" have proven to be but the old tired ways with a bad retread job, and now there is failure after failure in the attempts to convert the US into a third-world (and third-rate) country.
A growing percentage of what is laughingly called "the leadership" within the Dem'crat party do not regard themselves as citizens of the US, but as "world citizens". Their concept of patriotism revolves around "the world", as opposed to that troublemaker country in which they had the misfortune to be born.
Nationalism has no place in their intellectual view, and is probably what they consider to be the #1 problem in the world today, leading to endless conflicts over "sovereignty" and ethnic differences.
"Terrorists" are just "world citizens" trying to break up this fixation with nationalism, and as such, they are noble warriors in the war on US nationalism. "World citizens" cannot, by definition, exclude terrorists from their circle of camaraderie.