Hugo Black,
Linn v. United Plant Guard Workers of America…
“ When Congress passed the National Labor Relations Act, it must have known, as almost all people do, that in labor disputes both sides are masters of the arts of vilification, invective and exaggeration. In passing this law Congress indicated no purpose to try to purify the language of labor disputes or force the disputants to say nice things about one another. Nor do I believe Congress intended to leave participants free to sue one another for libel for insults they hurl at one another in the heat of battle. ”
