We mostly ignored it. Lots of people want to ignore it now.
That bumper sticker is a fantasy. We are at war with an enemy that is fueled by an ideology of absolute hatred for anything that is not part of their belief system. We can not negotiate, we can not retreat, we can only win or lose.
When terror comes, they will seek peace, but there will be none.
–Ezekiel 7:25, New International Translation