I'm afraid I can only relate anecdotal observations, but my corner of the Midwest does sadly host an active Neo-Nazi population. A couple of my friends in the city where I live have been violently assaulted and injured by self-professed Neo-Nazis (and strangers) venturing here from rural counties looking for trouble to start.
Likewise, I have a couple times seen Stormfront host threads by individuals who disagreed strongly enough with (usually far-left leaning) political protests in this city to seek identification of the protesters in any photos, names, and where they live. Along with not terribly subtle threats of violent retribution.
I can certainly see recklessness in Wikileak's actions, especially revealing identities of covert agents, thereby endangering them.
I would hope at my least anecdotal observation above of Stormfront's connection to violent criminal behavior makes clear both organizations do indulge in recklessness, albeit in degrees being debated here.