I just came across the following userpage
http://en.wikipedia.org/wiki/User:Blind14
which shows a "This user is a nazi"-userbox quite prominently,
depicting a swastika in a clearly non-enzyclopedic contect (i.e. as a
personal non-scientific reference / symbol of adherence). I'm not sure
about legislation in US but I wonder whether this could be an offense
against law. Feel free to comment on whether it is a violation of
Wikipedia policies, I won't comment this, as I didn't take part in the
Great Userboxes War.
Michael