I'll add this, since much of the criticism of Varoufakis reminded me of this quote by a US Civil Rights fighter and eventual US Congressman:

If you object to unfair treatment, you're an ingrate.  If you seek equity and fair consideration, you're uppity.  If you demand union security, you're un-American.  If you rebel against repressive management tactics, they will lynch and scalp you.  But if you are passive and patient, they will take advantage of both.-- Congressman William Clay, Sr., speaking to the AFL-CIO Federation of Government Employees, 1975