Leads people to reject factual information that doesn't match their own beliefs, which leads to uniformed decision making.
Leads people to hold onto false beliefs that may harm another group or individual (i.e. racist or unscientific beliefs).
Filter Bubbles:
Can worsen the effects of confirmation bias by isolating social media users from alternative viewpoints and ideas.
Increase existing partisan tensions in the government and in society as a whole, making it difficult for people to come together as a group to achieve a common goal.