Hogg has always rubbed me the wrong way: Here's a golden oldie from that "R" website...

Oh; the "David Hogg" that got into Harvard with a 1270 SAT? I always thought that stunk to high heaven. Look at his subsequent tweets; he writes like a strung-out high schooler. "hist", "boarder"?

Hogg is a plant. Maybe even a Manchurian Candidate. Consider this:

David Hogg will be unliked by his peers for being a controlling, fascist wannabe. They'll dislike being in class with him because he'll be an exceptional brown-noser and will stir the pot by making everything a social justice issue. He'll have poor grades because he's just not that smart.

Poor grades, loner, social outcast. Throw in some 'depression meds' and you have a future school shooting. Only the timing is in question, but you can bet it'll be at an 'effective' moment.