The defendant, a black man, was convicted of rape, armed burglary, and other charges arising out of the rape and stabbing of a white woman in her apartment on the night of August 30, 1978. The convictions were affirmed by the Appeals Court. 10 Mass. App. Ct. 330 (1980). We granted the defendant’s application for further appellate review to consider the application of G. L. c. 234, § 28, to the interrogation of prospective jurors in such cases. We affirm the convictions, but we direct that in[*638] similar trials hereafter jurors are to be examined with respect to racial prejudice, pursuant to the statute, “individually and outside the presence of other persons about to be called as jurors or already called.”

The defendant filed a motion that the judge allow counsel to examine prospective jurors individually as to whether each juror stood indifferent, proposing thirteen questions and any other questions to which a juror’s answer might give rise. Two of the questions related to racial prejudice. ^[1] The judge said he would give the statutory questions (G. L. c. 234, § 28, first par.), and some of the requested questions, but would do so “en banc.” He inquired why defense counsel asked for interrogation regarding racial prejudice, and counsel responded: “First of all, the defendant, as you can see, is a black, and the victim is a very attractive white girl. . . . Second, the crimes he is charged with are very serious crimes, and one indictment involves a rape. People have a great many feelings on the subject of, number one, rape; and also rape of a white girl by a black man.” The judge denied the request. He gave the prospective jurors instructions as a group, asked the questions he had allowed, including the general question on bias required by G. L. c. 234, § 28, first par., and individually interrogated a number of prospective jurors who came forward as suggested. Included in the instructions to the group was the following: “We want nobody on the jury who has any biases or prejudices against black persons.” Some of the individual interrogations included questions on racial prejudice.

In Commonwealth v. Ross, 361 Mass. 665 (1972), vacated, 410 U.S. 901, aff'd on rehearing, 363 Mass. 665, cert, denied, 414 U.S. 1080 (1973) (with dissents), habeas corpus granted sub nom. Ross v. Ristaino, 388 F. Supp. 99 (D. Mass.), affd, 508 F.2d 754 (1st Cir. 1974), rev’d, 424 U.S. 589 (1976), we held that the constitutional require[*639] ment of a special inquiry of prospective jurors laid down in Ham v. South Carolina, 409 U.S. 524 (1973), was limited to cases where the defendant was a “special target for racial prejudice.” 363 Mass, at 672. In other cases, questions beyond those required by G. L. c. 234, § 28, first par., were in the judge’s discretion. Our view was upheld by the United States Supreme Court in Ristaino v. Ross, supra, and in the interim we denied relief to seven convicted defendants who asked us to reverse their convictions because of failure to interrogate jurors specifically about racial prejudice. Commonwealth v. Lumley, 367 Mass. 213, 220 n.6 (1975), and cases cited.

In the Lumley case we said that “as a practical matter, when a motion that prospective jurors be interrogated as to possible prejudice is presented, we believe the trial judge should grant that motion.” Id. at 216. By St. 1973, c. 919, the Legislature inserted a second paragraph in G. L. c. 234, § 28, which we thought would lend encouragement to such a course in cases of doubt. See Commonwealth v. Harrison, 368 Mass. 366, 373-374 (1975). In several subsequent cases we indicated that questions directed to revealing racial bias, if required, had been sufficient. Commonwealth v. Core, 370 Mass. 369, 373-376 (1976). Commonwealth v. Bailey, 370 Mass. 388, 399-400 (1976). Commonwealth v. Grace, 370 Mass. 746, 757 (1976). Commonwealth v. Walker, 379 Mass. 297, 299-300 (1979). In a number of cases involving other types of bias, however, we upheld the judge in refusing to apply § 28, second par., as amended through St. 1975, c. 335, ^[2] unless there was a substantial risk that the jury[*640] would be influenced by extraneous issues. Commonwealth v. Dickerson, 372 Mass. 783, 792-793 (1977). Commonwealth v. Horton, 376 Mass. 380, 393-395 (1978), cert, denied sub nom. Wideman v. Massachusetts, 440 U.S. 923 (1979). Commonwealth v. Campbell, 378 Mass. 680, 695-696 (1979). Commonwealth v. Shelley, 381 Mass. 340, 351-353 (1980).

The Supreme Court of the United States has indicated that under its supervisory authority over the Federal courts it would require that questions directed to the discovery of racial prejudice be asked in some circumstances in which such an inquiry is not constitutionally mandated. Ristaino v. Ross, 424 U.S. 589, 597 n.9 (1976). Recently a plurality of the Justices of that Court indicated that Federal trial courts “must make such an inquiry when requested by a defendant accused of a violent crime and where the defendant and the victim are members of different racial or ethnic groups.” Rosales-Lopez v. United States, 454 U.S. 182, 192 (1981). We have refused to impose such a requirement, and the trial judge and the Appeals Court in the present case have been faithful to our decisions. Thus there is no error.

We think, however, that our decisions have given insufficient force to § 28, second par. The United States Court of Appeals for the First Circuit has suggested that interracial rape may be “a classic catalyst of racial prejudice.” See Dukes v. Waitkevitch, 536 F.2d 469, 471 (1st Cir.), cert, denied, 429 U.S. 932 (1976). Although, as that court held, interrogation of jurors as to racial prejudice is not constitutionally mandated in such a case, we think it should be held in cases tried hereafter that as a matter of law interracial rape cases present a substantial risk that extraneous issues will in[*641] fluence the jury and hence are within § 28, second par. Under the 1975 amendment this means that prospective jurors are to be interrogated individually in accordance with the statute, rather than as a group. See Commonwealth v. Shelley, 381 Mass. 340, 353 n.12 (1980).

We stand by the cautionary remarks in Commonwealth v. Lumley, 367 Mass. 213, 216-217 (1975): The motion for interrogation of prospective jurors as to racial prejudice “should come from the defendant himself. Before granting the motion, the trial judge should carefully ascertain that the defendant’s decision to insist on specific questions regarding racial bias was a knowing and voluntary one, made with an understanding that such specific questions may activate latent racial bias in certain prospective jurors or may insult others without uncovering evidence of bias in hardcore bigots who refuse to acknowledge their prejudice.” The judge has broad discretion as to the questions to be asked, and need not put the specific questions proposed by the defendant. Commonwealth v. Walker, 379 Mass. 297, 300 (1979), and cases cited.

The Appeals Court also rejected the defendant’s claim of error in the charge to the jury on the defendant’s right not to testify. On this point we have nothing to add to the opinion of the Appeals Court.

Judgments of the Superior Court affirmed.