I'm fairly skeptical about this. Placing hands in a circle is a symbol used in many contexts. i've read up a little bit on the occult, don't claim to be an expert by any means, but hands in a circle has never seemed to be a particularly significant part of any ritual i've heard about. Yeah they were putting hands on a table in the image the video guy put in there, and this is a somewhat tenuous connection.

What I'd like to see is if there is anything more substantive linking this to magic ritual of any sort. If there are any additional resources that can support the argument that this circle of hands means anything other than "we're all here together supporting the families of the victims", then let us see them.