Set captives free?

I don't often pass this way, although it's so close to home. This used to be a noisy nightclub a while back.

The board says

Edinburgh Miracle Temple
Set the captives free
Kingdom Church

Hmm? Hard to tell if it's still functioning on the first floor above the boarded up doors. I tried a bit of Googling and found some very strange stuff.....

The yellow posters on the boarded up doors were for yesterday's rally - and it turns out that the smaller white ones beneath, which I hadn't noticed before, are the same posters but translated into Polish, for the newest Leithers!