Do pigs eat human flesh

In the past two decades, I am sure I recall much publicised investigations into and confirming the disposal of human bodies/body parts in a manner ultimately resulting in their consumption by pigs. I have also been told by friends from country/farm areas that pigs are NEVER fed meat scraps for fear they will develop a taste for it- human or otherwise. These animals are apparently very clever and a hungry pig is a formidable animal.