The officer resisted must be authorized to execute some legal process, in the execution of which he is resisted; and he must be authorized to serve or execute the writ at the time he is resisted, to constitute the offense.37

The statute defining the offense usually includes special officers or any private person appointed to execute some process.38

The offense of resisting an officer is committed if an officer selling goods by virtue of an execution be resisted in delivering possession to the purchaser.39

It is no defense that the officer in making an arrest did not show the warrant when the accused knew he was an officer.40 Nor is the innocence of the accused any lawful excuse for resisting an officer.41