This one is kinda borderline and I messed up a few things.
Basically he's saying that he hates polish people and shit like that so idk if that is sufficient enough for HS/H.
https://imgur.com/a/BJjx8yl
I kind of messed up not putting in how they were killed by sk, but I'll explain how it is.
The Framer's name involved Poland in it and you can see "poland" behind the death note.
Idk if this is sufficient enough to confirm greenmarshal was sk but whatever.