I include the urls in case you are obliged to watch them at source on You Tube.
First, raucous cries of "Free, Free ..." set the tone in this very long live-streamed video from Ruptly TV. At 25:33 a brave band of Zionist counter protesters with Israeli flags hoves into view:
(To quote the uploader:
Pro-Palestine organisations have called for a national march and rally on Saturday, November 4 in London on the 100th anniversary of the Balfour Declaration.The rally is being met with resistance from pro-Israel supporters who are celebrating the occasion.Video on Demand: http://www.ruptly.tv
Second, a veritable river of Israel haters of all kinds pass by: from about 6:01 "Campaign Choirs Singing for Palestine" a semi-comedic touch as an inordinate number of reality-challenged white-haired warblers witter about a certain wall that saves Israeli lives from terrorists: