Restrictions were imposed on the advertisement of tobacco products, enacted on December 7, 1941, and signed by Heinrich Hunke, the President of the Advertising Council. Advertisements trying to depict smoking as harmless or as an expression of masculinity were banned. Ridiculing anti-tobacco activists was also outlawed, as was the use of advertising posters along rail tracks, in rural regions, stadiums, and racing tracks. Advertising by loudspeakers and mail was also prohibited.