I'm unsure why you're spinning a discussion about foreign interference in the EU into a discussion about Republicans vs. Democrats.

To the EU, it doesn't matter much if it's the Republicans or the Democrats doing it. What matters is that the USA is trying to interfere with the EU's political landscape.

It would be bad if they pushed the extreme left, too. They just happen to be pushing the extreme right.

(The reason right-wing political violence is more talked about in the EU is also rather simple: It is much more prevalent. https://www.bka.de/DE/UnsereAufgaben/Deliktsbereiche/PMK/PMK...)