Social Media is once again in the spotlight after another mass shooting: The Institute for Strategic Dialogue, which monitors and analyzes extremist content online, has put together a briefing on suspected shooter Robert “Bobby” Crimo III. Bottom line, analysts say, Crimo appears to have had an extensive online presence that was littered with signs of mental health issues, hatred, and a gravitation toward hard-right and neo-fascist thought/ideologies. ABC News' John Cohen has the details.