Bloomberg [bloomberg.com], Endadget [engadget.com] and the rest of the digital news world are reporting on Blizzard suspending a Hearthstone Pro for adding a pro-Hong Kong message at the end of his stream.
From Bloomberg
A unit of Activision Blizzard Inc. has punished a player for expressing support for Hong Kong’s protest movement, the latest example of a U.S. company attempting to rein in speech that might displease the Chinese communist party.
Blizzard's official release [playhearthstone.com] says that he violated competition rules, namely
Engaging in any act that, in Blizzard’s sole discretion, brings you into public disrepute, offends a portion or group of the public, or otherwise damages Blizzard image will result in removal from Grandmasters and reduction of the player’s prize total to $0 USD, in addition to other remedies which may be provided for under the Handbook and Blizzard’s Website Terms.