Dylan Roof's "manifesto"

First,  how the "manifesto" was uncovered...

http://www.thedailybeast.com/articles/2015/06/20/how-twitter-sleuths-found-dylann-roof-s-manifesto.html

And now the "manifesto" itself written by Dylann Roof...

http://webcache.googleusercontent.com/search?q=cache:7gnU3T4mdXcJ:lastrhodesian.com/data/documents/rtf88.txt+&cd=4&hl=en&ct=clnk&gl=us&lr=lang_en|lang_pt

More about Dylann Roof...

http://www.nbcnews.com/storyline/charleston-church-shooting/relatives-charleston-church-shooter-dylann-roof-describe-quiet-sweet-kid-n379071

From that last link I posted...

Long before police say Dylann Roof massacred nine people at a Charleston, South Carolina, church this week, his relatives recall he was a "sweet kid" who grew into a "painfully shy" loner.

But along the way, they told NBC News, he became ensnared by something sinister online.

"He was locked in his room looking up bad stuff on his computer," Roof's ex-stepmother, Paige Mann, said she had heard from his mother. "Something on the computer drew him in — this is Internet evil," she said Saturday from her home in Chapin, South Carolina.

This kid was a misfit like his misfit counterparts who want to join up with ISIS and behead people.  
They get so much hate for the world bottled up in them that the only way it can go is to explode in violence.

Same as it was with Timothy McVeigh. Except now there's a shit load more of them out there.