Blizzard workers held an umbrella protest for banned Hearthstone professional
Watch the HCT Summer Championship! — Hearthstone — Blizzard News
Blizzard has removed Blitzchung from Grandmasters and banned him from competing in Hearthstone following his on-stream Hong Kong protest - Inven Global
Blitzchung controversy - Wikipedia
Blizzard bans US college esports players for Hong Kong protest