In reply to aln:
Was this the building in which you live, or the one in which you work ?
If the latter, then I do hope you ask HR to investigate and deal with whoever it is putting anything political on a noticeboard.
If the former, then scrap this rubbish and put something rather left-wing up instead - just to wind up the extremist in question.
Either way, you have my pity for living or working with whoever it was.