Hmm...Jon Schwartz is a well known journalist, and from a read of the piece, it looks to be factually correct. What is the definition of a 'hit piece' in this

Hmm...Jon Schwartz is a well known journalist, and from a read of the piece, it looks to be factually correct. What is the definition of a 'hit piece' in this context? Something that portrays a company/person in an unflattering light? That in itself seems to be a somewhat strange distinction.