[cdcdawg]

Fancier way of saying “#orangemanbad” is all it is.

[airborne]

#OrangeManBad

#PussyHatsGood

[fhayek]

You have the correct answer. It means nothing, except to the Left, who can use the term as a catch all to mean whatever the user wants it to mean. A good synonym for anti-Trumpism is “anti-Americanism”.