[...] For Cabral, like Nkrumah, colonialism and neocolonialism are two forms of imperialism, both of which negate "the historical process of the dominated people by means of violent usurpation of the freedom of development of the national productive forces." "If we accept the principle that the liberation struggle is a revolution and that it does not finish at the moment when the national flag is raised and the national anthem played, we will see that there is not, and cannot be, national liberation without the use of liberating violence by the nationalist forces, to answer the criminal violence of the agents of imperialism." [...]