Recognize that AI is probably net harmful: Actually-existing and near-future AIs are net harmful—never mind their longer-term risks. We should shut them down, not pussyfoot around hoping they can somehow be made safe.
Create a negative public image for AI: Most funding for AI research comes from the advertising industry. Their primary motivation may be to create a positive corporate image, to offset their obvious harms. Creating bad publicity for AI would eliminate their incentive to fund it.