Summary

Robert H. Jackson Michelson v. United States — Opinion of the Court

Reputation is the net balance of so many debits and credits that the law does not attach the finality to a conviction when the issue is reputation, that is given to it when the issue is the credibility of the convict.
The inquiry as to an arrest is permissible also because the prosecution has a right to test the qualifications of the witness to bespeak the community opinion. If one never heard the speculations and rumors in which even one's friends indulge upon his arrest, the jury may doubt whether he is capable of giving any very reliable conclusions as to his reputation.
Source: Wikisource

Robert H. Jackson Michelson v. United States — Opinion of the Court

In the frontier phase of our law's development, calling friends to vouch for defendant's good character, and its counterpart-calling the rivals and enemies of a witness to impeach him by testifying that his reputation for veracity was so bad that he was unworthy of belief on his oath were favorite and frequent ways of converting an individual litigation into a community contest and a trial into a spectacle. Growth of urban conditions, where one may never know or hear the name of his next-door neighbor, have tended to limit the use of these techniques and to deprive them of weight with juries.
Source: Wikisource

Robert H. Jackson Michelson v. United States — Opinion of the Court

This rule is sometimes confused with that which prohibits cross-examination to credibility by asking a witness whether he himself has been arrested.
Arrest without more does not, in law any more than in reason, impeach the integrity or impair the credibility of a witness. It happens to the innocent as well as the guilty. Only a conviction, therefore, may be inquired about to undermine the trustworthiness of a witness.
Arrest without more may nevertheless impair or cloud one's reputation. False arrest may do that.
Source: Wikisource

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