Christian, Judge Justly

"Judge not lest ye be judged!" said the promoter and brother of the girl telling fortunes at the County Fair. This verse is often used as a sort of "Trump" card to ward off and silence statements condemning sinful behavior. Is the Christian never to judge? Never to make a statement about what is right and wrong or just and unjust? Jesus does not teach us to never judge, but when we do judge, to do so justly!