I remember when the BNP did a leaflet drop in my street a couple of years ago.
About 20 of them came posting the leaflets, and they had about 5 or 6 of what appeared to 'minders', they snuck in under the cover of darkness, raced around and were gone again in about 30 seconds.
It was very amusing watching them trying not to be recognised.
oh, and their leaflet was littered with spelling mistakes.