Context:
He was a key figure in Bo's campaign against criminal gangs in the sprawling city-province, a drive welcomed by many residents, but criticized by some lawyers and commentators as a purge-like effort that trampled on legal protections and spared figures seen as enjoying protection.
His campaign spared (saved from the effects of the campaign) figures (people) [who were] seen as enjoying protection (considered to be having the benefit of protection).
Context is always important; labelling is rarely important.