Pretty sure this is just people on the internet doing the things that they do.
Every candidate has their own % of shitbags.
No one is immune.
Interesting that it's just Bernie supporters being singled out as vile troublemakers.
Most likely because if headlines had: "Hilary Supporters doing bad shit," it would be (even more) bad press for her campaign which you can't have that.
Which I say while knowing that these "BernieBros" probably are real and doing as much damage unknowingly to the cause they're trying to aid.
Also I do find the arguments though of "facing reality" to be laughable. Facing reality has more or less devolved into resigning yourself to what society is and rather keep the same things going then actually trying to improve.