The only thing necessary for the triumph of evil is for good men to do nothing
I helped my Polish builder with some English PR for his portfolio which contained some Freudian slips. It was a little difficult getting the point over to a Slavonic language speaker.
I showed him a photograph of a notice that that one of his countrymen had placed outside a garden centre. The new Polish owner had some of those gorgeous pink peonies in stock but he placed a notice outside the garden centre saying "Penis for sale"