Nineteen people have been arrested (at the time of this post) with some police and protesters sustaining injuries as thousands descended on the City, reported by BBC.
Police estimate there are currently 4,000 demonstrators in the City of London and have blocked off a number of streets.
"Just dropped in to the crowd at Bank. Seems rowdy and a little tense but no violence" TwitPic by @tombot18
Twitter users in London and other parts of the world speak about the current protest activities:
Some UK and US citizens are opposed to the riotous behavior: