The most accurate effect of the oxymoron "Civil Disobedience" from the options provided is:
4. It illustrates a theme: standing by one's conscience is more civilized than simply obeying the majority.
This interpretation aligns with the central argument of the passage, which emphasizes the importance of individual conscience over the will of the majority and suggests that true civil behavior involves adhering to a moral compass rather than blindly following laws or majority opinions.