What should we do if someone near/with us is being mocked at?
It is impermissible to mock at someone, either face to face or in his absence. The Quranic verse says: “Woe to every (kind of) scandal-monger and backbiter, who pileth up wealth and layeth it by thinking that his wealth would make him last for ever! By no means! He will be sure to be thrown into that which Breaks to Pieces…” (al-Humaza, 1-4). If we can, we must silence the mocker. If we cannot, we should show our discontent and leave the place.