This is terrible but I'll say this, when our politicians repeatedly show themselves to not only be unresponsive but downright hostile to the will of the people, this is the kind of thing that will happen. There are lots and lots of crazy people out there and politics will make them even crazier.
Attributing evil motivation to all "them" of the other persuasion, and only then "assessing" their involvement, automatically and always leads to easy conclusions and assumptions of "their" involvement and culpability in nefarious acts. Consigning evil before-hand inevitably leads to condemnation. Consigning innocence before-hand inevitably leads to exoneration.
Those whom we approve never do anything bad. Everything that the others do is evil. Every evil act has to be "their" doing.
(For example, like attributing this shootiing to the Tea Party, Sarah Palin, Rush Limbaugh, alien invaders, liberals, Democrats, Republicans, conservatives, gun-owners, drug-smugglers, disgruntled voters, ?-wing conspiracies, etc.)
Within seconds and long after JFK was shot, Texans, Southerners, conservatives, gun-owners, right-wingers were assumed responsible. No such collective condemnation followed the discovery that Oswald was a leftist.
Get the facts, then opine and guess.
IMHO, any collective culpability belongs to those among us who cherish and promote discord as somehow admirable, desirable, or delicious. Leave it to kooks to take any consensus to an extreme.
"Good enough" isn't.
Always take your responsibilities seriously but never yourself.
