Opinions are not the same as representations of others' ideas. If I say "I like capitalism," that is my opinion. If I say "Karl Marx likes capitalism," that i

Opinions are not the same as representations of others' ideas. If I say "I like capitalism," that is my opinion. If I say "Karl Marx likes capitalism," that is a misrepresentation of someone else's ideas. If I say "Karl Marx likes oppressive authoritarian regimes" because every country implementing communism has pretty much turned out that way, that's pretty much misrepresenting someone else's ideas too.