Rangers, wearing red, white and blue have come to represent the British Protestant group, supporting Unionist causes and often displaying more allegiance to England than Scotland.
In other words...
Second rate team of foreigner soccer players who suffer the aduration of a bunch of bigoted protestant low brows in Glasgow (not that the catholics in the city are much better).
Biggest cause of violence in Glasgow (after general drink related assaults).
Unofficial motto: No surrender! ... No surrender to what? To whom? Where? Why?