Psychologists have found that we are more likely to share that information with those we are closest to, whether that be family, friends, work colleagues, or acquaintances, especially if that information agrees with our preexisting belief system or opinions.
Most of us never knowingly or deliberately share and spread false and/or misleading information, that is usually the realm of states trying to influence events outside their borders, politicians and their supports trying to gain power by any means necessary, extremist groups trying to radicalize and recruit members (usually the young, naive and impressionable) or companies using unethical tactics to part you from your money.
