The German word for bite reflex, Beißreflex, has an additional figurative sense. Let's say Herr Ausraster has a massive hatred for the Ecological Democratic Party. Every time he reads something on a news site about the party, be it totally trivial and/or inoffensive, he simply has to write rants about this party. Herr Ausraster has a Beißreflex regarding this party.
So I'd like to know whether there is a word that does not just mean hating sth./so., but "acting knee-jerk fashion" when confronted with that person/thing etc. For example "As to the Democrats/Republicans/Libertarian Party, Jules has an XY (Beißreflex) — every time he reads about them on the website of the Podunk Enquirer, he writes offensive rants resulting in the deletion of his posts."