Guangzhou Television Cantonese controversy

In July 2010, the Chinese People's Political Consultative Conference (CPPCC) Guangzhou Committee, in a written proposal to mayor of Guangzhou Wan Qingliang, suggested increasing Mandarin programming on Guangzhou Television's main and news channels. The proposal sparked widespread controversy, met with fierce criticism in native Cantonese-speaking cities including Guangzhou and Hong Kong, which eventually triggered a mass protest in the former city.

Source: Wikipedia — Guangzhou Television Cantonese controversy (CC BY-SA 4.0)