First there was the Boy Scouts’ “Respect Copyrights” activity patch, backed by the Motion Picture Assn. of America. Then there was “Crime-Fighting Canines,” a weekly anti-piracy comic strip series for children in which two black Labrador retrievers named Lucky and Flo sniffed out bootleg DVDs. The series was part of a school education campaign led by the MPAA. Now that group, along with the Recording Industry Assn. of America and the nation’s main Internet service providers, is quietly backing another controversial push to educate schoolchildren about the evils of piracy. A nonprofit group called the Center for Copyright Information, which is supported by the MPAA and other groups, has commissioned a school curriculum to teach elementary-age children about the value of copyrights.