sure, this dude deserves the vast bulk of the responsibility for this act. he was everything you said he was.

but there are, hate to say, individuals with the potential to do such a thing walking around in every line of work right now. it is very appropriate to ask whether an environment enables or disuades an individual from commiting these actions. if we think the environment directly enabled a heinous act, we can find fault with it and demand that it change or be changed.

in other words, FEDERAL FUCKING REGULATION.