Having a different opinion and expressing it =/= trolling.
Why do you not find it "trolling" to have far left marxists on here refer to conservatives with every vile repugnant name they can think of? Why do you not find it "trolling" to have filthy degenerates attempt to smear a candidate for President by taking his name and claiming that they can turn it into a name for a deviant sexual term?
Why does "trolling" only seem to occur when it involves individuals opposing radical leftists?
I am not familiar with this definition of "trolling."