.This is a writ of error to reverse a judgment of criminal contempt entered against the plaintiff in error in the District Court of Chelsea in the course of proceedings in which he and two others were on trial 1 for violating a regulation of the metropolitan district commission. This regulation, which is not set forth in the record, apparently prohibits the display of signs or other advertising in reservations under the control of the сommission. The Commonwealth pleads in nullo est erratum. For convenience the plaintiff in error, who was the defendant in the District Court, is referred to herein as the defendant. A single justice of this court reservеd and reported the case without decision "upon the petition for writ of error, writ of error, writ of scire facias, the return of the judge of the District Court of Chelsea, and the plea of the respоndent, for the consideration of the full court.”
In the District Court the Commonwealth introduced evidence that on July 23, 1950, the defendant and the two persons on trial with him were members of a group of approximately twenty persons which had assembled on the swimming beach known as the Revere Beach Reservation; that the reservation is under the control of the metropolitan district commission; that the group occupied an area about -thirty feet square; and that within this area the three defendants erected ten signs. 2
The defendant voluntarily took the stand and testified that he was the leader of a group of young people who went to the beach for a picnic; that he went to the beach solely for the purpose of relaxing; that he had erected four signs; that neither of the other two defendants had erected any signs; and that the group of which he was the leader *493 was organized solely to promote peace. At the conclusion of his testimony “the court was of the opinion that . . . [the defendant] had testified falsely. To test his veracity and to determine what credibility should be given to his whole testimony or any part thereof, the court proceeded to examine” the defendant as аppears in the margin. 1 The interrogation culminated in the question, “Are you a Communist or a member of the Communist Party?” The defendant replied, “I refuse to answer on advice of counsel.” A discussion followed bеtween the judge and the defendant’s counsel, the latter arguing that the question was irrelevant and that an answer to it might tend to incriminate the defendant. The judge ruled that the defendant, having voluntarily taken the stand, “must answer all questions relevant and material to the issues before the court.” The judge again asked the defendant whether he was a Communist or a member of the Communist Party and upon his refusal to answer the question he was adjudged in contempt and ordered committed to jail.
Seven assignments of error are set forth in the petition but in the view we take of the case the only one we need consider is that which аlleges an impairment of the defendant’s privilege against self incrimination.
When a defendant in a criminal case voluntarily takes the stand he waives his privilege against self incrimination to the extent that he renders himself liable to cross-examination on all facts relevant and material to the crime with which he is charged.
Commonwealth
v.
Lannan,
Nor was the question competent for purposes of impeachment. Whatever the rule may be elsewhere, it is settled, in this Commonwealth .that “a witness cannot be asked on cross-examination, in order to affect his credibility, about his part in transactions irrelevant to the issue on trial.”
Commonwealth
v.
Schaffner,
Under art. 12 of the Declaration of Rights the defendant could not be “compelled to accuse, or furnish evidence against himself.” Thus as to those matters which were
*495
not relevant tо the issue or proper for impeachment purposes the defendant was privileged from answering any question which would “expose him to criminal prosecution, or tend to subject him to a penalty or forfeiture.”
Bull
v.
Loveland,
Under G. L. (Ter. Ed.) c. 264, § 11, as appearing in St. 1948, c. 160, § 1, it is provided: “Whoеver by speech or by exhibition, distribution or promulgation of any written or printed document, paper or pictorial representation advocates, advises, counsels or incites . . . the overthrоw by force or violence or other unlawful means of the government of the commonwealth or of the United States, shall be punished by a fine of not more than one thousand dollars, or by imprisonment for not more than three years, or both . . . .” A Federal statute, commonly known as the Smith act *496 (U. S. C. [1946 ed.] Sup. Ill, Title 18, § 2385), contains similar provisions. 1
In the very recent case of
Blau
v.
United States,
It follows that the judgment of the District Court is reversed. The plaintiff in error is awarded costs against the Commonwealth to be paid by the county of Suffolk. See G. L. (Ter. Ed.) c. 250, § 12;
Walsh
v.
Commonwealth,
So ordered.
Notes
By agreement all three defendants were tried together. Each was represented by counsel.
These signs contained legends of the following tenor: “Wе Want Peace”; “Homes & Schools — Not Atomic Bombs”; “Outlaw the Atom Bomb”; “We Want to Grow up In a World at Peace”; and “Young Progressives of America.” ......
“The Judge: You stated that you went there solely for relaxation? The defendant: Yes. The Judge: And the purpose of your organization is solely that of promoting peace? The defendant: Yes. The Judge: Have you been on a public beach before? The dеfendant: Yes. The Judge: Have you ever seen signs such as these on public beaches? The defendant: No. The Judge: Why then did you believe that you had a right to erect them? The defendant: I don’t know. I can’t answer thаt. The Judge: Is it not true that the Young Progressives of America is listed as a subversive organization — a Communistic Front? The defendant: No. The Judge: Is it not true that there are many Communists in this group? The defendant: No.”
No contention is made that the claim of privilege was not properly asserted. The privilege, of course, belonged to the defendant and not to his attorney.
Ross
v.
Crane,
Pertinent provisions of this act are as follows: “Whoever knowingly or willfully advocates, abets, advises, or teaches the duty, necessity, desirability, or propriety of overthrowing or destroying the government of the United States or the government of any State ... by force or violence . . . ; or
“Whoever, with intent to cause the overthrow or destruction of any such government, prints, publishes, edits, issues, circulates, sells, distributes, or publicly displays any written or printed matter advocating, аdvising, or teaching the duty, necessity, desirability, or propriety of overthrowing or destroying any government in the United States by force or violence, or attempts to do so; . . .
“Shall be fined not more than $10,000 or imprisoned not more then ten years, or both . . ..”
