Apparently, in the movie M. Night Shyamalan's The Happening, plants are fighting back against the supposed ecological sins of humans. If that really were occuring, I'd call it blatant ingratitude considering all we've done for plants such as providing them with CO2 fertilizer and suppressing insect pests. I would also call it a violation of toxic-waste emitter solidarity. Then I'd start considering how to fight back.
First, we identify the ring leader: Osama bin Ragweed. After we go after ObR's allies, we'll have to keep other terrorist plants from stepping into the resulting power vacuum so we'll have to overthrow Saddam Poison Ivy as well. That should keep the rest from making trouble.