A helicopter hovers over a crowd who joined an anti-drugs gathering in Rizal park in Manila March 21, 2009. A government campaign directed at youths attempted to create a Guinness World Record for the first and biggest march against illegal drugs. Substances like methamphetamine and marijuana are widely used and produced in the Philippines, according to a US report. A recent survey by the Philippine police showed illegal drug use as the fourth most pressing law enforcement problem in the country.[Agencies]