"More and more often you hear museums loudly proclaim an opinion. I'll say it immediately: I think that's incorrect. When a museum enters the social opinion arena with a biased viewpoint, it asserts its rightness in advance and thereby colors the art it displays. It becomes a speaker instead of being a mouthpiece."
In media, an echo chamber is a metaphorical description of a situation in which beliefs are amplified or reinforced by communication and repetition inside a closed system. By visiting an "echo chamber", people are able to seek out information that reinforces their existing views, potentially as an unconscious exercise of confirmation bias. This may increase social and political polarization and extremism.