Should we retaliate if someone humiliates us or forgive them and remain silent?

Retaliation usually only prolongs and sometimes heightens tensions. If you're able to forgive it usually helps you as much as it does the other person - of course forgiveness is not always quick and need not be. It needs to be genuine and considerate. When you learn to forgive you don't feel as hurt as much and you always come out looking better for not having to stoop to a low level.