He did not suffer a horrible tragedy- he was home.
He rode his bike there after it was all over.
Hogg was/is a stupid kid. Nearly all kids are stupid though. They know nothing, act irrationally and impsively, and think themselves invincible. Very few are allowed to get access to a nationwide audience to showcase their idiocy though. The entire reason Hogg is anything other than an anonymous college kid ranting about socialism in a coffee shop is because the media want him to be.
That’s what I remember - not there during the shooting.