This essentially began a totally new phase in the late 1800's when Marxism was created.

Prior to that, allegiances to other countries were mostly (I'm conjecturing) a) paid, bribed or natural NATIONAL allegiances: such as a spy working for another nation, or being bribed to serve that other nation - this during the period of history when nations worked against each other to reach superiority.

The other form of allegiances would have been secretive, Cabal allegiances to a secret covert group like the various Cabal cliques, such as Illuminati, Jesuits, Various orders, etc.

But with the advent of Marxism, history turned a corner. Once Marxism was created, it raised an ideological power center to which otherwise normal human beings would offer their allegiance over and above their service to their own country or nation. It was, to some extent, the emergence of the secret Cabal clique-type allegiance on to the mainstream. Many communists were deceived by the ideology into thinking that Marxism offered something good. So, American, British, French, Italian, Indian, etc, Marxists offered their dedication to the Communist ideal over and above their own nation.

But something else also happened, soon after. Nations discovered that instead of aggressively competing with each other their could accomplish a lot more prosperity by cooperating with each other. This is the natural outcome of the Christian spirit, recognizing that regardless of nation, we are all children of God and owe a higher loyalty to God and his children.

Thus, humanity emerged on the global level, on one hand deceived and seduced by the lies of the Devil via Marxism, and on the other, realizing that we are one people, one race under God.

The model for that second development was the United States of America. America is the precursor of what the world can and should become by recognizing the innate rights of all humans over and above any of the power or rights granted to government and institutions created via human laws.

Democrat activists are evil not because they offer allegiance to another country - if it's China or whatever, that's incidental (because they are paid). Mostly, the evil exists because they offer their allegiance to a Satanic vision and ideology, beyond national identity.