Hand it to the left, they know how to shock and disturb.
From the DCNF:
Trending: 20 Trump Triumphs the Media Ignored!
The PSA was produced by Sandy Hook Promise, a non-profit tied to several parents of children murdered in the 2012 Sandy Hook school shooting. This video in particular is meant to encourage people to spot the possible “warning signs” of a school shooting, so that a potential shooter can be identified before they violently act out.