Missing categories

Hi

I'm not a big expert on this, so apologies in advance if I'm either repeating
stuff that other people have said, or not making sense.  It seems to me that
there is a big hole in the schema.  Political organisations are not
represented.  There is NGO and workersunion, but there are many other
grassroots and formal political organisations that can't be expressed.  Here
in the UK we have three major political organisations: the Conservatives,
Labour and the Liberal Democrats, but there is no category for a political
party.  Surely it should be Organisation/politicalparty.  The organisation
that I would like to add micro data for advocates for people in the care
system in a London borough.  I can express the location, but where's the
organisation/political/lobbygroup or whatever?

If I'm not going about this in the right way, perhaps you'd be kind enough to
point me in the right direction.  If I've misunderstood the schema would you
be kind enough to point out my error.  If I'm doing this in the right way,
then thanks for your time and attention.  I look forward to any consequent
changes.

Kind regards
Mike Hart