Jury nullification means a knowing and deliberate ignoring of evidence or a refusal to apply the law as explained in the jury instructions. A jury may feel the application of the law is unfair, unjust or is immoral in some way. Or, they may want to "send a message" about some social issue. Jury nullification is not a legal function of a jury and is not usually considered to be consistent with a jury's duty to judge a case on the facts and the law.