OK, maybe not black goo (or maybe so), but how about flaming tap water unequivocally associated with fracking nearby?  Fracking activity on federal land, regulated by the EPA.  In many cases the methane in the drinking water was associated with other contamination from fracking chemicals.  These were not isolated instances.  It's quite likely that with Trump's plans to decimate the EPA and other agencies will result in less oversight of this kind of stuff.  You can be certain that the fracking industry is lobbying for relaxed regulations which they're likely to get with the Trump administration.  Maybe it's drinking water.  Maybe it's air quality or pesticides in food or...  Fear tactic?  Yeah, this kind of stuff should frighten us all.