Although Jarvis was successful in founding Mother's Day, she became resentful of the commercialization of the holiday. By the early 1920s, Hallmark Cards and other companies had started selling Mother's Day cards. Jarvis believed that the companies had misinterpreted and exploited the idea of Mother's Day and that the emphasis of the holiday was on sentiment, not profit. As a result, she organized boycotts of Mother's Day, and threatened to issue lawsuits against the companies involved. Jarvis argued that people should appreciate and honor their mothers through handwritten letters expressing their love and gratitude, instead of buying gifts and pre-made cards. Jarvis protested at a candy makers' convention in Philadelphia in 1923, and at a meeting of American War Mothers in 1925. By this time, carnations had become associated with Mother's Day, and the selling of carnations by the American War Mothers to raise money angered Jarvis, who was arrested for disturbing the peace.