What is most closely the meaning of militant as it is used in the passage below (paragraph 13)?
Unfortunately, the rest of the world has turned a blind eye on the situation. Atrocities still go unpunished, and many governments have helped to cover up the problem. I think it's important to say this, because the Guatemalan people know it, and we feel offended again and again when we realise that our country has been silenced. This has also made us aware of the plight of other people. Solidarity between nations must be militant, constant, and continuous. There is a need for international organisations to which the victims can turn for help, to which people can go to defend their lives and to protect their human rights.