Hong Kong's Civil Human Rights Front says it has received permission from police for a rally.
During the past six months, authorities had denied requests from the group to hold rallies.
The rally planned for Friday evening is to protest against the use of tear gas by police.
Demonstrators have repeatedly called for an independent inquiry into police use of force.
The police chief says “fake news” is undermining the reputation of his police force.
Reuters reports the march, planned on Human Rights Day, is sure to stir up the air in Hong Kong.