Don't fall for it. This isn't some true or false piece of information that matters if it's wrong so the best line of action is to inform those around you. Be vague if they're soft, you don't need to name the jew as it's irrelevant. Describe it like anon does, phrases like "the powers that be" "the system" etc. Plant the seed so when (if) these things do happen that others don't become complacent and strap up for zog wars.