The whole article is a good read, especially where it goes into analysis of why people put up such things publicly - it says, in part:
“Lauri Regan, herself a Manhattan attorney, has a plausible explanation:
I think that generation no longer has any sense of decorum “in public,” as their whole lives are public. From Facebook to Snapchat to Instagram and Twitter, they all post stuff without thinking and assume there’s no rules governing acceptable discourse.”
Probably some truth to that BUT she and her ilk probably go crazy whenever Trump puts out a tweet. So the rule is "no rules for me, many rules for thee"