LOCAL TOPICAL POLITICAL COMMENT

The following comment, handwritten in slanting blocks on a piece of A4 paper pinned on the residents noticeboard next to the lift near the back entrance on the ground floor level, appeared today.

HERE COME THE GURKHAS
THEY CAN FIGHT THE SOMALIS
FOR THE FEW REMAINING PLACES
IN THIS MONGREL COUNTRY.

I'd like to know who wrote this and the evidence used to construct the argument...a place to begin...