GUARATINGUETA, Brazil - Traffickers will face divine justice for the scourge of illegal drugs across Latin America, Pope Benedict XVI warned yesterday, telling dealers that "human dignity cannot be trampled upon in this way."

Brazil and the rest of the region face dangerously high rates of drug abuse, and traffickers must "reflect on the grave harm they are inflicting on countless young people and on adults from every level of society," Benedict said.

"God will call you to account for your deeds," he said before a cheering crowd of 6,000 on a sprawling lawn outside the Fazenda da Esperanca, or Farm of Hope, a drug-treatment center founded by a Franciscan friar.

Brazil is the world's second-largest consumer of cocaine, after the United States, according to the State Department, and big cities across Latin America's largest nation are plagued with drug violence.

While surveys show cocaine use has been relatively stable in Brazil for years, drug-related violence is a huge problem, driven by gangs that control street-corner dealing and the shipment of drugs to Europe and the United States from elsewhere in South America.

In Rio de Janeiro's teeming slums, gangs recruit children and engage in near-daily shootouts with police that frequently kill bystanders.

The violence is endemic in other Latin American countries, including Colombia, and Caribbean nations. In Mexico, gangs battling over billion-dollar smuggling routes into the United States leave a daily body count from beheadings, grenade attacks and execution-style killings.

The treatment center the pope visited claims an 80 percent success rate, giving addicts spiritual guidance as they milk cows, tend apple orchards and work as beekeepers.

Benedict donated $100,000 to the treatment center and told more than 1,500 recovering addicts wearing white shirts with yellow sleeves, representing the Vatican's flag, that they must become "ambassadors of hope."

"The Lord has given you this opportunity for physical and spiritual recovery, so vital for you and your families," the pope said. "In turn, society expects you to spread this precious gift of health among your friends and all the members of the community."

The center is near the shrine city of Aparecida, where Benedict today will open a Latin American and Caribbean bishops' conference aimed at reversing the erosion of the church in the region.

Benedict on Friday lamented "difficult times for the church" in Brazil amid "aggressive proselytizing" by born-again Protestant congregations.

Brazil's census shows the percentage of citizens characterizing themselves as Catholics fell to 74 percent in 2000 from 89 percent in 1980, while those calling themselves evangelical Protestants rose to 15 percent from 7 percent.

The pope is expected to map out a strategy to combat the church's losses when he opens the bishops' conference in Aparecida, 100 miles east of Sao Paulo.