G20 leaders gather amid security

to gather - zbierać, gromadzić
World leaders are gathering in London to discuss ways to resolve the worst financial crisis since the 1930s.

to dress down - ubierać się luźno
Workers in London's financial district have been told to dress down and stay home to avoid provoking demonstrators.

to dub - przezwać, ochrzścić/nazwać
Some organisers have dubbed the event "Financial Fools Day"

to hand out - rozdawać
leaflet - ulotka
Campaigners have been handing out leaflets bearing slogans, such as "Hang A Banker" and "Storm The Banks".

to batter - targać, maltretować
The G20 summit will be crucial for Gordon Brown, whose reputation for economic competence has been battered by the financial crisis.

Źródło: http://news.bbc.co.uk/2/hi/business/7975851.stm