There is no evidence to support this view, the report said.
"A narrative about hooliganism on that day was created which led many in the country to accept that it was somehow a gray area," Cameron said.
"Today's report is black and white. The Liverpool fans 'were not the cause of the disaster.'"
The panel's analysis of the evidence found that substantive amendments were made by South Yorkshire Police to remove and alter comments unfavorable to their organization.
Of 164 police statements that were "significantly amended," 116 were doctored to remove negative comments about the force's response and leadership, the report said.
The insult was compounded by a story published at the time in The Sun newspaper, headlined "The Truth," in which it was falsely reported that Liverpool fans had been drunk, violent and had stolen from the dead.
Those false claims have for the first time been traced back to South Yorkshire Police sources, Cameron said.