“ We find no room in the privilege against self-incrimination for classifications of people so as to deny it to some and extend it to others. Lawyers are not excepted from the words 'No person * * * shall be compelled in any criminal case to be a witness against himself' ”

“ Hogan is inapplicable because petitioner is a member of the Bar. We conclude that Cohen v. Hurley should be overruled, that the Self-Incrimination Clause of the Fifth Amendment has been absorbed in the Fourteenth, that it extends its protection to lawyers as well as to other individuals, and that it should not be watered down by imposing the dishonor of disbarment and the deprivation of a livelihood as a price for asserting it. ”

“ The threat of disbarment and the loss of professional standing, professional reputation, and of livelihood are powerful forms of compulsion to make a lawyer relinquish the privilege. That threat is indeed as powerful an instrument of compulsion as 'the use of legal process to force from the lips of the accused individual the evidence necessary to convict him * * *.' United States v. ”