A hate crime is a crime that is motivated by the race, religion or gender of another individual. It is an international issue that spreads beyond any one location or country. International law must have rules that support hate crime laws as it is an international issue. A hate crime by its very nature is international, it involves people from different walks of life.
International law that relates to any sort of hate crime is usually related in some way to war. If international law supported hate crime laws, then genocide like that which has occurred in several African nations would be a criminal offense and those who orchestrated it put on trial for it. But no action has been taken, which indicates there is not sufficient support of hate crime laws on an international level.