It’s true that many of the people on the front line of PC policing/secularism happen to have traditionally been secular Jews (e.g. Karl Marx, Franz Boaz [the inventor of cultural relativism], etc.), but it’s also true that the only people harping on this trivial fact are the anti-Semites.
Mainstream, American Christians do not go around posting about “Jewish journalists” trampling on their Christian values. If you’re reading stuff like that, it’s coming from David Duke kind of folks. I, for one, don’t have any interest in caring what they think of us. If the Jews all became conservative over night, they would not suddenly start loving us.