False or misleading information has a way of getting into people’s heads

False or misleading information has a way of getting into people's heads and having an effect on our lives. In this essay, please explore–based on substantiated evidence–"bad" ideas or information that have had a detrimental impact on a community. Consider how this idea/information is spread, who spreads it, and what the result has been in a community. Discuss also how you have come to understand that these ideas or this information is faulty: what is your source and how do you know it is reliable? Finally, consider this important question by way of a conclusion: what can be done about stopping mis- or disinformation from spreading in communities, and how do we "fix" the damage already done by it?