Buenos Aires: protesters march on British embassy They had erected metal barriers a block away from the embassy, in the Recoleta neighbourhood of Buenos Aires, in anticipation of the violence, but these were charged down as activists threw gun-propelled Molotov bombs, stones and pepper spray at officers. Police, who managed to push the protesters back with riot shields, then used tear gas, rubber bullets and water cannon in a street battle lasting 30 minutes on Avenida Pueyrredón, one of the main avenues through Buenos Aires that was shut off to the public during the chaos. Activists graffitied buildings around the embassy with slogans slurring David Cameron and waved placards demanding the handover of the Falklands to Argentina. It was the third march on the British embassy in as many months. In February, a group of protesters burned the Union Jack there. Weeks later - as the diplomatic row between Argentina and the UK over the disputed archipelago intensified - more than 100 militants held a rally at the embassy calling for the Argentine government to break off relations with Britain.