evil is about behavior not 'things'.
if they know they may be sworn to secrecy.
What it seems to mean to me is 'this is a person who has secrets', but I am sure it means something else to them.
120 years ago all public buildings in America would display freemason emblemry. A court ruling, declaring them 'religious symbols' meant it all had to be removed.
Right around the time of the establishment of the Federal Reserve.