Thousands of anti-war protesters in Australia clashed with police Wednesday outside a military arms convention in downtown Melbourne. Around 1,800 police officers have been deployed to a Melbourne convention center where the Land Forces International Land Defense Exposition will take place from Wednesday until Friday. Witnesses reported protesters throwing rocks, horse manure and tomatoes at police horses and officers with shields and wearing riot gear. A line of police was seen forcing protesters away from the convention center. Officers used pepper spray against some protesters and were seen taking others into custody.