Police estimated around 3,000 protesters showed up holding banners saying, "Stop Sri Lanka's Genocide of Tamils" along with other phrases, per the article. The demonstration was reported to be peaceful and no arrests were made.
Tweets from London surfaced about the Tamils' protest during the morning hours.
Twitterer @mathew_weaver posted this TwitPic of the protests.
"Tamil 2 minutes silence on Parliament Sq"
@alexandermoore posted this TwitPic after the protests occurred:
"Just cycled past Parliament. Police, angry looking Tamils and lots of rubbish everywhere."