Why Do Some Anti-Union People See Unions as Harmful to Society

Why do some anti-union people see unions as harmful to society?

A) Because they often use violent tactics
B) Because they tend to have radical political beliefs, such as communism
C) Because union leaders fight for their own members' interests at the expense of everyone else
D) Because the role of trade unions has never been clear in Canadian society
E) Because they are undemocratic