The Hawk, the Kite, and the Pigeons

THE PIGEONS, terrified by the appearance of a Kite, called upon
the Hawk to defend them. He at once consented. When they had
admitted him into the cote, they found that he made more havoc
and slew a larger number of them in one day than the Kite could
pounce upon in a whole year. Avoid a remedy that is worse than the disease. - Aesop

[Courtesy of Aesopfables.com]