"Fan outrage" refers to a situation where fans of a certain movie, TV show, game, or celebrity express strong anger or disapproval about something related to their interest, often through social media or public channels. Full definition
As the source of much fan outrage, multiplayer progression is definitely a sore spot. (videochums.com)
Less impressive was the reaction to the finale of the show, with fans outraged by the ending, which killed off the «Mother» and saw Ted and Robin reunited. (housegoeshome.com)
Mass Effect 3, for example, bit its tongue and drove away with its horrendous endings, without any sort of amendment to it despite fan outrage. (gonintendo.com)