@EmptyWords They could be falling victim to their own propaganda, though in my opinion, Being X is subtly corrupting people's minds to fuel the war to continue harassing Tanya. As an example of this:
I've read up to volume 8 and so far there is no obvious proof of this so it's just my speculation.
I didn't understand fully what happened in that Hanekawa sequence. Episode tossed the cross at her to kill her or to scare her? The ghost pushed her to save her or kill her?