There are so many traditions in various parts of the world that other nations think are strange, but for certain ethnic groups it is believed to be true. Those who feel the traditions of other tribes are strange, have no right to protest directly, let alone fight them. Because it will give birth to wars between tribes / nations.
The local tribe/nation certainly understands the situation and condition of the area where they live. Including his character and religious beliefs.
For example, the following examples of traditions in Africa:
1. Stomach incision.