The date was chosen to coincide with the day of the death of Zumbi dos Palmares, in 1695. The Day of Black Consciousness seeks to be a date to remember the black resistance to slavery in general, since the first transport of Africans to Brazilian soil (1549).
Some entities such as the Movimento Negro (the largest of its kind in the country) organize lectures and educational events, mainly targeting black children. It seeks to prevent the development of self-bias, ie, inferiority in society. Other topics discussed by the black community and that are highlighted on this day are: insertion of blacks in the labor market, university quotas, if there is discrimination by the police, identification of ethnicity, fashion and black beauty, etc.
https://blackwomenofbrazil.co/2013/11/20/today-is-the-national-day-of-black-consciousness-in-brazil-holiday-now-celebrated-in-more-than-1000-cities/