1.   Please, no more violence.

2.   I had to stop the insanity.

3.   It took up so much bandwidth that it threatened to paralyze the system, and the company issued a stiff warning to stop the insanity.

4.   Please, stop the insanity.

5.   Put Mike Eruzione in charge tomorrow and stop the insanity.

6.   Stop the insanity.

7.   Stop this insanity!

8.   Please stop this insanity.