Republispam
This describes parroted right-wing opinions that get spammed to news forums whenever there's a story about global warming, fracking, the EPA, species extinctions, gun control, taxation, health care, abortion or any topic that regularly bounces around the right-wing echo chamber. The comments ignore the actual substance of the articles, using snarky language and analogies that veer wildly off-topic.
A story about a man killed in a freak pruning shear accident drew these Republispam comments: "Obummer's gonna ask us to register all pruning shears!" (and) "Just wait: Al Gore will claim that reckless gardening is caused by global warming!"