The Eugene church that is hosting this "House Party" has also created a Facebook event to promote it:
https://www.facebook.com/events/765990620174047/
I definitely think that they are going to try to exploit the Umpqua shootings. Just look at the image they posted for the event at the church. Looks like the typical "we must protect the children" anti-gun propaganda:
View attachment 262991
Well, their FB page shows 10 interested, 5 going. Not exactly a barnburner of an event, at least according to that source.