Someone painted this on the wall that separates Israel and Palestine (for more on that, look HERE). Maybe it’s something of an act of defiance against hatred and meanness. Maybe it was intended to be a plea.
But I think it’s best understood as a propositional fact, insofar as there can be one.
As those fuelled by anger, bitterness and hate try to defeat each other with violence, everyone loses. Violence begets violence. Revenge begets revenge.
No one will win with bombs, rockets and walls. Those who live by the sword will die by the sword.
The answer is easy to say, however difficult it may be achieve.