What to do if you happen upon a peace rally:

1) Approach a protester talking about peace and saying there should be no
retaliation for the unwarranted attacks on our country.

2) Engage in brief conversation, ask if military force is appropriate.

3) When he says "No," ask, "Why not?"

4) Wait until he says something to the effect of, "Because that would just
cause more innocent deaths, which would be awful and we should not cause
more violence."

5) When he's in mid sentence, punch him in the face as hard as you can.

6) When he gets back up to up to punch you, point out that it would be a
mistake and contrary to his values to strike you, because that would, "be
awful and he should not cause more violence."

7) Wait until he agrees that he has pledged not to commit additional
violence, and punch him in the face again, harder this time.

Repeat steps 6 and 7 until he understands that sometimes it is necessary
to punch back.