Yeah, it's not great to get into trying to be the sole arbiter of what is the truth and what is not. People will either figure it out for themselves, or they will not. Unfortunately, most choose the "not" option if what they're seeing fits with their chosen ideology. What we should really worry about that actually matters more than social media is when the government censors and "adjusts" scientific data to fit its political agenda, which it does on a fairly regular basis.