"I hear the whisperings of many:"

“Terror on every side!
Denounce! let us denounce him!”
All those who were my friends
are on the watch for any misstep of mine.
“Perhaps he will be trapped; then we can prevail,
and take our vengeance on him.”

-- Jer 20:10-13

Kidnapping and hostage taking bring on a reign of terror; by means of threats they subject their victims to intolerable pressures. They are morally wrong. Terrorism threatens, wounds, and kills indiscriminately; it is gravely against justice and charity. Torture which uses physical or moral violence to extract confessions, punish the guilty, frighten opponents, or satisfy hatred is contrary to respect for the person and for human dignity. Except when performed for strictly therapeutic medical reasons, directly intended amputations, mutilations, and sterilizations performed on innocent persons are against the moral law.

-- CCC 2297