I've heard all the variations on "if you have nothing to hide..." through "well we have to catch the terrorists".
Every time a story comes up that some killing or terrorist act happened and one of the perpetrators made a post on twitter, or was already known to security services, the opinion always seems to be along the lines of "well I guess we need to monitor more". Never once have I heard a variation on "if they're known to security already why wasn't something done to arrest or prevent".
Meanwhile there is some belief in chemtrails amongst a few of the younger people I know going on FB group posts I see them share.
I've given up trying to explain either security things or humidity, dew points and the basics of flying.
I don't have the energy to fight a battle that feels like Canute vs the Ocean. I wish I knew something that would make people care.