this issue has been a subject of a special report on Radio 4 so I think its got more legs than "sensationalist propagada"
John Waite investigates suggestions that the RSPCA may be too quick to prosecute vulnerable people whom, it claims, are neglecting or abusing their pets. Detractors say that raids by the police in co-operation with the charity sometimes leave the elderly and people with mental health issues in a state of shock, regardless of whether they are later cleared of wrongdoing, and some vets and lawyers assert that they have been unfairly targeted because of evidence given by them against the RSPCA in court
http://www.bbc.co.uk/programmes/b037v4fp