Why was Dirty Harry criticized to be fascist?

I recently binged the Dirty Harry series and while reading upon the criticism the first film received, I saw that many critics labelled it fascist. If I'm not wrong, fascism usually means authoritarian superiority, racism, extreme nationalism, etc. The movie portrayed none of these, in fact it showed how messed up the judicial system is, that the convict has more rights than the victim. So why was the film criticized as such?